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<div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Series of notebook computers released in Japan</div> <style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox hproduct vevent"><caption class="infobox-title fn summary">IBM PS/55 Note</caption><tbody><tr><td colspan="2" class="infobox-image"><span class="mw-default-size" typeof="mw:File/Frameless"><a href="/wiki/File:IBM_PS55_logo.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/38/IBM_PS55_logo.svg/220px-IBM_PS55_logo.svg.png" decoding="async" width="220" height="30" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/38/IBM_PS55_logo.svg/330px-IBM_PS55_logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/38/IBM_PS55_logo.svg/440px-IBM_PS55_logo.svg.png 2x" data-file-width="522" data-file-height="72" /></a></span></td></tr><tr><th scope="row" class="infobox-label">Manufacturer</th><td class="infobox-data"><a href="/wiki/IBM" title="IBM">IBM</a></td></tr><tr><th scope="row" class="infobox-label">Product family</th><td class="infobox-data"><a href="/wiki/IBM_PS/55" title="IBM PS/55">IBM PS/55</a></td></tr><tr><th scope="row" class="infobox-label">Release date</th><td class="infobox-data">1991<span class="noprint">; 33 years ago</span><span style="display:none"> (<span class="bday dtstart published updated">1991</span>)</span><sup id="cite_ref-Valligra-1987_1-0" class="reference"><a href="#cite_note-Valligra-1987-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label">Introductory price</th><td class="infobox-data">between <span style="white-space: nowrap">$1,680</span> and <span style="white-space: nowrap">$2,550</span></td></tr><tr><th scope="row" class="infobox-label">Predecessor</th><td class="infobox-data"><a href="/wiki/IBM_PC_Convertible" title="IBM PC Convertible">IBM PC Convertible</a></td></tr></tbody></table> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Ibm_5523s14_lidopen.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/9a/Ibm_5523s14_lidopen.jpg/220px-Ibm_5523s14_lidopen.jpg" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/9a/Ibm_5523s14_lidopen.jpg/330px-Ibm_5523s14_lidopen.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/9a/Ibm_5523s14_lidopen.jpg/440px-Ibm_5523s14_lidopen.jpg 2x" data-file-width="1600" data-file-height="1200" /></a><figcaption>Model N23SX (5523-S)</figcaption></figure> <p>The <b>IBM Personal System/55 Note</b> (stylized as <b>PS/55 note</b>) is a series of <a href="/wiki/Laptop" title="Laptop">notebooks</a> manufactured by the <a href="/wiki/IBM" title="IBM">IBM</a> subsidiary <a href="/wiki/IBM_Japan" class="mw-redirect" title="IBM Japan">IBM Japan</a> as part of the <a href="/wiki/IBM_Personal_System/55" class="mw-redirect" title="IBM Personal System/55">IBM Personal System/55</a> series. </p><p>The international <a href="/wiki/IBM_PS/2_Note" class="mw-redirect" title="IBM PS/2 Note">IBM PS/2 Note</a> series was based on the PS/55 Note series. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="History">History</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=IBM_PS/55_Note&action=edit&section=1" title="Edit section: History"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>IBM started selling the PS/55 Note series in Japan in April 1991.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p><a href="/wiki/Western_Digital" title="Western Digital">Western Digital</a> has supplied video and logic chips for the PS/55 Note.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Models">Models</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=IBM_PS/55_Note&action=edit&section=2" title="Edit section: Models"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The prices for the PS/55 Note varies between <span style="white-space: nowrap">$1,680</span> and <span style="white-space: nowrap">$2,550</span>. </p> <ul><li>Model N23SX (5523-S) (03/1991) (similar to the <a href="/wiki/PS/2_N33SX" class="mw-redirect" title="PS/2 N33SX">PS/2 N33SX</a> and <a href="/wiki/PS/2_N51SX" class="mw-redirect" title="PS/2 N51SX">PS/2 N51SX</a> models)</li> <li>Model 5535 (1987)<sup id="cite_ref-Valligra-1987_1-1" class="reference"><a href="#cite_note-Valligra-1987-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></li> <li>Model 5535-S (1990)<sup id="cite_ref-Watch_Impress_4-0" class="reference"><a href="#cite_note-Watch_Impress-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup></li> <li>Model T22sx (1992)</li> <li>Model N27sx (02/1992) (similar to the <a href="/wiki/PS/2_CL57SX" class="mw-redirect" title="PS/2 CL57SX">PS/2 CL57SX</a> model)</li> <li>Model C23V (10/1992)</li> <li>Model C52 (10/1992) (identical to the <a href="/wiki/ThinkPad_700C" class="mw-redirect" title="ThinkPad 700C">ThinkPad 700C</a>)<sup id="cite_ref-Watch_Impress_4-1" class="reference"><a href="#cite_note-Watch_Impress-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup></li></ul> <div class="mw-heading mw-heading2"><h2 id="Reception">Reception</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=IBM_PS/55_Note&action=edit&section=3" title="Edit section: Reception"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The PS/55 Note was a rapid success in Japan.<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=IBM_PS/55_Note&action=edit&section=4" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-Valligra-1987-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-Valligra-1987_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Valligra-1987_1-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em 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Retrieved <span class="nowrap">2021-04-20</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=ITmedia&rft.atitle=%E3%81%BF%E3%81%AA%E3%81%A8%E3%81%BF%E3%82%89%E3%81%84%E3%81%AE%E5%A4%A7%E5%92%8C%E4%BA%8B%E6%A5%AD%E6%89%80%E3%81%A7%E3%80%8C20%E4%B8%96%E7%B4%80%E3%81%AEThinkPad%E3%80%8D%E3%81%A8%E5%86%8D%E4%BC%9A%E3%81%97%E3%81%9F&rft_id=https%3A%2F%2Fwww.itmedia.co.jp%2Fpcuser%2Farticles%2F1504%2F07%2Fnews030.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AIBM+PS%2F55+Note" class="Z3988"></span></span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation book cs1"><a rel="nofollow" class="external text" href="https://www.worldcat.org/oclc/36663061"><i>Management of design alliances: sustaining competitive advantage</i></a>. 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Chichester: Wiley. 1998. p. 93. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-471-97476-5" title="Special:BookSources/0-471-97476-5"><bdi>0-471-97476-5</bdi></a>. <a href="/wiki/OCLC_(identifier)" class="mw-redirect" title="OCLC (identifier)">OCLC</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/oclc/36663061">36663061</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Management+of+design+alliances%3A+sustaining+competitive+advantage&rft.place=Chichester&rft.pages=93&rft.pub=Wiley&rft.date=1998&rft_id=info%3Aoclcnum%2F36663061&rft.isbn=0-471-97476-5&rft_id=https%3A%2F%2Fwww.worldcat.org%2Foclc%2F36663061&rfr_id=info%3Asid%2Fen.wikipedia.org%3AIBM+PS%2F55+Note" class="Z3988"></span><span class="cs1-maint citation-comment"><code class="cs1-code">{{<a href="/wiki/Template:Cite_book" title="Template:Cite book">cite 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href="/wiki/Template:IBM_personal_computers" title="Template:IBM personal computers"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:IBM_personal_computers" title="Template talk:IBM personal computers"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:IBM_personal_computers" title="Special:EditPage/Template:IBM personal computers"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="IBM_personal_computers" style="font-size:114%;margin:0 4em"><a href="/wiki/IBM" title="IBM">IBM</a> personal computers</div></th></tr><tr><td class="navbox-abovebelow" colspan="2"><div> <ul><li><span class="nowrap"><a href="/wiki/Influence_of_the_IBM_PC_on_the_personal_computer_market" title="Influence of the IBM PC on the personal computer market">Influence on the PC market</a></span></li> <li><span class="nowrap"><a href="/wiki/Acquisition_of_the_IBM_PC_business_by_Lenovo" title="Acquisition of the IBM PC business by Lenovo">PC business acquisition by Lenovo</a></span></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Desktop<br />and all-in-one</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Single models</th><td class="navbox-list-with-group navbox-list navbox-off" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/IBM_5120" title="IBM 5120">5120</a></li> <li><a href="/wiki/IBM_System/23_Datamaster" title="IBM System/23 Datamaster">DataMaster</a></li> <li><a href="/wiki/IBM_Personal_Computer" title="IBM Personal Computer">PC</a> <ul><li><a href="/wiki/List_of_IBM_Personal_Computer_models" title="List of IBM Personal Computer models">list of models</a></li></ul></li> <li><a href="/wiki/IBM_Personal_Computer_XT" title="IBM Personal Computer XT">PC XT</a> <ul><li><a href="/wiki/PC-based_IBM_mainframe-compatible_systems" title="PC-based IBM mainframe-compatible systems">XT/370</a></li> <li><a href="/wiki/IBM_3270_PC" title="IBM 3270 PC">3270 PC</a></li> <li><a href="/wiki/IBM_Personal_Computer_XT_286" class="mw-redirect" title="IBM Personal Computer XT 286">XT 286</a></li></ul></li> <li><a href="/wiki/IBM_JX" title="IBM JX">JX</a></li> <li><a href="/wiki/IBM_PCjr" title="IBM PCjr">PCjr</a></li> <li><a href="/wiki/IBM_Personal_Computer_AT" title="IBM Personal Computer AT">PC AT</a> <ul><li><a href="/wiki/PC-based_IBM_mainframe-compatible_systems" title="PC-based IBM mainframe-compatible systems">AT/370</a></li> <li><a href="/wiki/PC-based_IBM_mainframe-compatible_systems" title="PC-based IBM mainframe-compatible systems">3270 AT</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Series</th><td class="navbox-list-with-group navbox-list navbox-off" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/IBM_5550" title="IBM 5550">5550</a></li> <li><a href="/wiki/IBM_Industrial_Computer" class="mw-redirect" title="IBM Industrial Computer">Industrial Computer</a></li> <li><a href="/wiki/IBM_PS/2" title="IBM PS/2">PS/2</a> <ul><li><a href="/wiki/List_of_IBM_PS/2_models" title="List of IBM PS/2 models">list of models</a></li> <li><a href="/wiki/IBM_PS/2_Model_25" title="IBM PS/2 Model 25">25</a></li> <li><a href="/wiki/IBM_PS/2_Model_25" title="IBM PS/2 Model 25">25 286</a></li> <li><a href="/wiki/IBM_PS/2_Model_25" title="IBM PS/2 Model 25">25 SX</a></li> <li><a href="/wiki/IBM_PS/2_Model_30" title="IBM PS/2 Model 30">30</a></li> <li><a href="/wiki/IBM_PS/2_Model_30" title="IBM PS/2 Model 30">30 286</a></li> <li><a href="/wiki/IBM_PS/2_Model_50" title="IBM PS/2 Model 50">50</a></li> <li><a href="/wiki/IBM_PS/2_Model_50" title="IBM PS/2 Model 50">50 Z</a></li> <li><a href="/wiki/IBM_PS/2_Model_55_SX" title="IBM PS/2 Model 55 SX">55 SX</a></li> <li><a href="/wiki/IBM_PS/2_Model_55_SX" title="IBM PS/2 Model 55 SX">55 LS</a></li> <li><a href="/wiki/IBM_PS/2_Model_60" title="IBM PS/2 Model 60">60</a></li> <li><a href="/wiki/IBM_PS/2_Model_60" title="IBM PS/2 Model 60">65 SX</a></li> <li><a href="/wiki/IBM_PS/2_Model_70" title="IBM PS/2 Model 70">70 386</a></li> <li><a href="/wiki/IBM_PS/2_Model_70" title="IBM PS/2 Model 70">70 486</a></li> <li><a href="/wiki/IBM_PS/2_Model_80" title="IBM PS/2 Model 80">80</a></li> <li><a href="/wiki/IBM_PS/2_E" title="IBM PS/2 E">E</a></li></ul></li> <li><a href="/wiki/IBM_PS/55" title="IBM PS/55">PS/55</a></li> <li><a href="/wiki/IBM_PS/V" class="mw-redirect" title="IBM PS/V">PS/V</a></li> <li><a href="/wiki/IBM_PS/1" title="IBM PS/1">PS/1</a></li> <li><a href="/wiki/EduQuest" title="EduQuest">EduQuest</a></li> <li><a href="/wiki/IBM_PS/ValuePoint" title="IBM PS/ValuePoint">ValuePoint</a></li> <li><a href="/wiki/Ambra_Computer_Corporation" title="Ambra Computer Corporation">Ambra</a></li> <li><a href="/wiki/IBM_PC_Series" title="IBM PC Series">PC Series</a></li> <li><a href="/wiki/IBM_Aptiva" title="IBM Aptiva">Aptiva</a></li> <li><a href="/wiki/IBM_NetVista" title="IBM NetVista">NetVista</a></li> <li><a href="/wiki/ThinkCentre" title="ThinkCentre">ThinkCentre</a> <ul><li><a href="/wiki/ThinkCentre_A_series" title="ThinkCentre A series">A series</a></li> <li><a href="/wiki/ThinkCentre_M_series" title="ThinkCentre M series">M series</a></li></ul></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Portable</th><td class="navbox-list-with-group navbox-list navbox-off" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/IBM_5100" title="IBM 5100">5100</a></li> <li><a href="/wiki/IBM_5110" title="IBM 5110">5110</a></li> <li><a href="/wiki/IBM_Portable_Personal_Computer" title="IBM Portable Personal Computer">Portable PC</a></li> <li><a href="/wiki/IBM_PS/2_portable_computers" title="IBM PS/2 portable computers">PS/2 portables</a> <ul><li><a href="/wiki/IBM_PS/2_portable_computers" title="IBM PS/2 portable computers">P70</a></li> <li><a href="/wiki/IBM_PS/2_portable_computers" title="IBM PS/2 portable computers">P75</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Laptop</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"></table><div> </div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">pre-ThinkPad</th><td class="navbox-list-with-group navbox-list navbox-off" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/IBM_PC_Convertible" title="IBM PC Convertible">Convertible</a></li> <li>PS/2 Laptop <ul><li><a href="/wiki/IBM_PS/2_Model_L40_SX" title="IBM PS/2 Model L40 SX">L40 SX</a></li> <li><a href="/wiki/IBM_PS/2_Model_CL57_SX" title="IBM PS/2 Model CL57 SX">CL57 SX</a></li></ul></li> <li><a href="/wiki/IBM_PS/2_Note_and_PS/note" title="IBM PS/2 Note and PS/note">PS/2 Note and PS/note</a> <ul><li><a href="/wiki/IBM_PS/2_Note#N33SX" class="mw-redirect" title="IBM PS/2 Note">N33SX</a></li> <li><a href="/wiki/IBM_PS/2_Note#N45SL" class="mw-redirect" title="IBM PS/2 Note">N45SL</a></li> <li><a href="/wiki/IBM_PS/2_Note#N51SX" class="mw-redirect" title="IBM PS/2 Note">N51SX</a></li> <li><a href="/wiki/IBM_PS/2_Note#N51SLC" class="mw-redirect" title="IBM PS/2 Note">N51SLC</a></li> <li><a href="/wiki/IBM_PS/2_Note#Model_425/425C" class="mw-redirect" title="IBM PS/2 Note">Model 425/425C</a></li></ul></li> <li><a class="mw-selflink selflink">PS/55 Note</a></li> <li><a href="/wiki/IBM_PCradio" title="IBM PCradio">PCradio</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/ThinkPad" title="ThinkPad">ThinkPad</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td colspan="2" class="navbox-list navbox-off" style="width:100%;padding:0;background:transparent;color:inherit;"><div style="padding:0px"><table class="navbox-columns-table" style="border-spacing: 0px; text-align:left;width:100%;"><tbody><tr style="vertical-align:top"><td class="navbox-list" style="padding:0px;vertical-align:top;width:50%;"><div> </div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">2<i>xx</i> series</th><td class="navbox-list-with-group navbox-list navbox-off" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/IBM_ThinkPad_220" title="IBM ThinkPad 220">220</a></li> <li><a href="/wiki/IBM_ThinkPad_230" class="mw-redirect" title="IBM ThinkPad 230">230</a></li> <li><a href="/wiki/IBM_ThinkPad_235" class="mw-redirect" title="IBM ThinkPad 235">235</a></li> <li><a href="/wiki/IBM_ThinkPad_240" title="IBM ThinkPad 240">240</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">3<i>xx</i> series</th><td class="navbox-list-with-group navbox-list navbox-off" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/IBM_ThinkPad_300" title="IBM ThinkPad 300">300</a></li> <li><a href="/wiki/IBM_ThinkPad_310" title="IBM ThinkPad 310">310</a></li> <li><a href="/wiki/IBM_ThinkPad_350" title="IBM ThinkPad 350">350</a></li> <li><a href="/wiki/IBM_ThinkPad_360" title="IBM ThinkPad 360">360</a></li> <li><a href="/wiki/IBM_ThinkPad_365" title="IBM ThinkPad 365">365</a></li> <li><a href="/wiki/IBM_ThinkPad_380" title="IBM ThinkPad 380">380</a></li> <li><a href="/wiki/IBM_ThinkPad_390" class="mw-redirect" title="IBM ThinkPad 390">390</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">5<i>xx</i> series</th><td class="navbox-list-with-group navbox-list navbox-off" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/IBM_ThinkPad_500" title="IBM ThinkPad 500">500</a></li> <li><a href="/wiki/Canon_NoteJet#IBM_ThinkPad_550BJ" title="Canon NoteJet">550BJ</a></li> <li><a href="/wiki/Canon_NoteJet#IBM_ThinkPad_555BJ" title="Canon NoteJet">555BJ</a></li> <li><a href="/wiki/IBM_ThinkPad_560" title="IBM ThinkPad 560">560</a></li> <li><a href="/wiki/IBM_ThinkPad_570" title="IBM ThinkPad 570">570</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">6<i>xx</i> series</th><td class="navbox-list-with-group navbox-list navbox-off" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/IBM_ThinkPad_600" title="IBM ThinkPad 600">600</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">7<i>xx</i> series</th><td class="navbox-list-with-group navbox-list navbox-off" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/IBM_ThinkPad_700" title="IBM ThinkPad 700">700</a></li> <li><a href="/wiki/IBM_ThinkPad_701" title="IBM ThinkPad 701">701 "Butterfly"</a></li> <li><a href="/wiki/IBM_ThinkPad_750" title="IBM ThinkPad 750">750</a></li> <li><a href="/wiki/IBM_ThinkPad_755" title="IBM ThinkPad 755">755</a></li> <li><a href="/wiki/IBM_ThinkPad_760" title="IBM ThinkPad 760">760</a></li> <li><a href="/wiki/IBM_ThinkPad_765" class="mw-redirect" title="IBM ThinkPad 765">765</a></li> <li><a href="/wiki/IBM_ThinkPad_770" title="IBM ThinkPad 770">770</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/IBM_ThinkPad_Power_Series" title="IBM ThinkPad Power Series">Power Series</a></th><td class="navbox-list-with-group navbox-list navbox-off" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/IBM_ThinkPad_Power_Series" title="IBM ThinkPad Power Series">800</a></li> <li><a href="/wiki/IBM_ThinkPad_Power_Series" title="IBM ThinkPad Power Series">820</a></li> <li><a href="/wiki/IBM_ThinkPad_Power_Series" title="IBM ThinkPad Power Series">821</a></li> <li><a href="/wiki/IBM_ThinkPad_Power_Series" title="IBM ThinkPad Power Series">822</a></li> <li><a href="/wiki/IBM_ThinkPad_Power_Series" title="IBM ThinkPad Power Series">823</a></li> <li><a href="/wiki/IBM_ThinkPad_Power_Series" title="IBM ThinkPad Power Series">850</a></li> <li><a href="/wiki/IBM_ThinkPad_Power_Series" title="IBM ThinkPad Power Series">851</a></li> <li><a href="/wiki/IBM_ThinkPad_Power_Series" title="IBM ThinkPad Power Series">860</a></li></ul> </div></td></tr></tbody></table><div> </div></td><td class="navbox-list" style="border-left:2px solid #fdfdfd;padding:0px;vertical-align:top;width:50%;"><div> </div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/ThinkPad_G_series" title="ThinkPad G series">G series</a></th><td class="navbox-list-with-group navbox-list navbox-off" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/ThinkPad_G_series" title="ThinkPad G series">G40</a></li> <li><a href="/wiki/ThinkPad_G_series" title="ThinkPad G series">G41</a></li> <li><a href="/wiki/ThinkPad_G_series" title="ThinkPad G series">G50</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/ThinkPad_T_series" title="ThinkPad T series">T series</a></th><td class="navbox-list-with-group navbox-list navbox-off" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/IBM_ThinkPad_T20" class="mw-redirect" title="IBM ThinkPad T20">T20</a></li> <li><a href="/wiki/IBM_ThinkPad_T21" class="mw-redirect" title="IBM ThinkPad T21">T21</a></li> <li><a href="/wiki/IBM_ThinkPad_T22" class="mw-redirect" title="IBM ThinkPad T22">T22</a></li> <li><a href="/wiki/IBM_ThinkPad_T23" class="mw-redirect" title="IBM ThinkPad T23">T23</a></li> <li><a href="/wiki/IBM_ThinkPad_T30" title="IBM ThinkPad T30">T30</a></li> <li><a href="/wiki/IBM_ThinkPad_T40" title="IBM ThinkPad T40">T40</a></li> <li><a href="/wiki/IBM_ThinkPad_T41" title="IBM ThinkPad T41">T41</a></li> <li><a href="/wiki/IBM_ThinkPad_T42" title="IBM ThinkPad T42">T42</a></li> <li><a href="/wiki/IBM_ThinkPad_T43" title="IBM ThinkPad T43">T43</a></li> <li><a href="/wiki/ThinkPad_T60" title="ThinkPad T60">T60</a></li> <li><a href="/wiki/ThinkPad_T61" title="ThinkPad T61">T61</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/ThinkPad_A_series" class="mw-redirect" title="ThinkPad A series">A series</a></th><td class="navbox-list-with-group navbox-list navbox-off" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li>A20m</li> <li>A21m</li> <li>A22m</li> <li>A22e</li> <li>A20p</li> <li>A21p</li> <li>A22p</li> <li>A30</li> <li>A31</li> <li>A30p</li> <li>A31p</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/ThinkPad_X_series" title="ThinkPad X series">X series</a></th><td class="navbox-list-with-group navbox-list navbox-off" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/ThinkPad_X_series" title="ThinkPad X series">X20</a></li> <li><a href="/wiki/ThinkPad_X_series" title="ThinkPad X series">X21</a></li> <li><a href="/wiki/ThinkPad_X_series" title="ThinkPad X series">X22</a></li> <li><a href="/wiki/ThinkPad_X_series" title="ThinkPad X series">X23</a></li> <li><a href="/wiki/ThinkPad_X_series" title="ThinkPad X series">X24</a></li> <li><a href="/wiki/ThinkPad_X_series" title="ThinkPad X series">X30</a></li> <li><a href="/wiki/ThinkPad_X_series" title="ThinkPad X series">X31</a></li> <li><a href="/wiki/ThinkPad_X_series" title="ThinkPad X series">X32</a></li> <li><a href="/wiki/IBM_ThinkPad_X40" title="IBM ThinkPad X40">X40</a></li> <li><a href="/wiki/ThinkPad_X_series" title="ThinkPad X series">X41</a></li> <li><a href="/wiki/ThinkPad_X_series" title="ThinkPad X series">X60</a></li> <li><a href="/wiki/ThinkPad_X_series" title="ThinkPad X series">X60t</a></li> <li><a href="/wiki/ThinkPad_X_series" title="ThinkPad X series">X61t</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/ThinkPad_R_series" class="mw-redirect" title="ThinkPad R series">R series</a></th><td class="navbox-list-with-group navbox-list navbox-off" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/ThinkPad_R_series" class="mw-redirect" title="ThinkPad R series">R30</a></li> <li><a href="/wiki/ThinkPad_R_series" class="mw-redirect" title="ThinkPad R series">R31</a></li> <li><a href="/wiki/ThinkPad_R_series" class="mw-redirect" title="ThinkPad R series">R32</a></li> <li><a href="/wiki/ThinkPad_R_series" class="mw-redirect" title="ThinkPad R series">R40</a></li> <li><a href="/wiki/ThinkPad_R_series" class="mw-redirect" title="ThinkPad R series">R50</a></li> <li><a href="/wiki/ThinkPad_R_series" class="mw-redirect" title="ThinkPad R series">R51</a></li> <li><a href="/wiki/ThinkPad_R_series" class="mw-redirect" title="ThinkPad R series">R52</a></li> <li><a href="/wiki/ThinkPad_R_series" class="mw-redirect" title="ThinkPad R series">R60</a></li> <li><a href="/wiki/ThinkPad_R_series" class="mw-redirect" title="ThinkPad R series">R61</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Others</th><td class="navbox-list-with-group navbox-list navbox-off" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/IBM_ThinkPad_TransNote" title="IBM ThinkPad TransNote">TransNote</a></li></ul> </div></td></tr></tbody></table><div> </div></td></tr></tbody></table></div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Handheld</th><td class="navbox-list-with-group navbox-list navbox-off" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/IBM_Palm_Top_PC_110" title="IBM Palm Top PC 110">Palm Top PC 110</a></li> <li><a href="/wiki/IBM_WorkPad" title="IBM WorkPad">WorkPad</a> <ul><li><a href="/wiki/IBM_WorkPad_Z50" title="IBM WorkPad Z50">Z50</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Prototypes</th><td class="navbox-list-with-group navbox-list navbox-off" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/IBM_Leapfrog" title="IBM Leapfrog">Leapfrog</a></li> <li><a href="/wiki/IBM_ThinkPad_Power_Series#Power_Series_600" title="IBM ThinkPad Power Series">Power Series 600</a></li> <li><a href="/wiki/IBM_ThinkPad_240#Transmeta_Crusoe" title="IBM ThinkPad 240">ThinkPad 240 with Transmeta Crusoe</a></li> <li><a href="/wiki/IBM_WatchPad" title="IBM WatchPad">WatchPad</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Video hardware</th><td class="navbox-list-with-group navbox-list navbox-off" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/IBM_Monochrome_Display_Adapter" title="IBM Monochrome Display Adapter">Monochrome Display Adapter</a></li> <li><a href="/wiki/Color_Graphics_Adapter" title="Color Graphics Adapter">Color Graphics Adapter</a></li> <li><a href="/wiki/Enhanced_Graphics_Adapter" title="Enhanced Graphics Adapter">Enhanced Graphics Adapter</a></li> <li><a href="/wiki/Professional_Graphics_Controller" title="Professional Graphics Controller">Professional Graphics Controller</a></li> <li><a href="/wiki/Multi-Color_Graphics_Array" title="Multi-Color Graphics Array">Multi-Color Graphics Array</a></li> <li><a href="/wiki/Video_Graphics_Array" title="Video Graphics Array">Video Graphics Array</a></li> <li><a href="/wiki/IBM_8514" title="IBM 8514">IBM 8514</a></li> <li><a href="/wiki/Extended_Graphics_Array" title="Extended Graphics Array">Extended Graphics Array</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Related</th><td class="navbox-list-with-group navbox-list navbox-off" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/IBM_5151" title="IBM 5151">IBM 5151</a></li> <li><a href="/wiki/IBM_BASIC" title="IBM BASIC">IBM BASIC</a></li> <li><a href="/wiki/IBM_PC%E2%80%93compatible" title="IBM PC–compatible">IBM PC–compatible</a></li> <li><a href="/wiki/Industry_Standard_Architecture" title="Industry Standard Architecture">Industry Standard Architecture</a></li> <li><a href="/wiki/IBM_IntelliStation" title="IBM IntelliStation">IntelliStation</a></li> <li><a href="/wiki/IBM_PC_keyboard" title="IBM PC keyboard">Keyboards</a> <ul><li><a href="/wiki/Model_F_keyboard" title="Model F keyboard">Model F</a></li> <li><a href="/wiki/Model_M_keyboard" title="Model M keyboard">Model M</a></li></ul></li> <li><a href="/wiki/Micro_Channel_architecture" title="Micro Channel architecture">Micro Channel</a></li> <li><a href="/wiki/IBM_Music_Feature_Card" title="IBM Music Feature Card">Music Feature Card</a></li> <li><a href="/wiki/Mwave" title="Mwave">Mwave</a></li> <li><a href="/wiki/IBM_4694" title="IBM 4694">SurePOS</a></li> <li><a href="/wiki/ThinkPad_UltraBay" title="ThinkPad UltraBay">UltraBay</a></li> <li><a href="/wiki/ThinkLight" title="ThinkLight">ThinkLight</a></li></ul> </div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: 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