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Form factor (design) - Wikipedia
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class="vector-toc-list"> </ul> </li> <li id="toc-Mobile_form_factors" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Mobile_form_factors"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.2</span> <span>Mobile form factors</span> </div> </a> <ul id="toc-Mobile_form_factors-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Notes" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Notes"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Notes</span> </div> </a> <ul id="toc-Notes-sublist" class="vector-toc-list"> </ul> </li> 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Available in 19 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-19" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">19 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%B9%D8%A7%D9%85%D9%84_%D8%A7%D9%84%D8%B4%D9%83%D9%84" title="عامل الشكل – Arabic" lang="ar" hreflang="ar" data-title="عامل الشكل" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%95%E0%A6%AE%E0%A7%8D%E0%A6%AA%E0%A6%BF%E0%A6%89%E0%A6%9F%E0%A6%BE%E0%A6%B0%E0%A7%87%E0%A6%B0_%E0%A6%B0%E0%A7%82%E0%A6%AA%E0%A6%97%E0%A6%A4_%E0%A6%97%E0%A6%A0%E0%A6%A8%E0%A6%AC%E0%A7%88%E0%A6%B6%E0%A6%BF%E0%A6%B7%E0%A7%8D%E0%A6%9F%E0%A7%8D%E0%A6%AF" title="কম্পিউটারের রূপগত গঠনবৈশিষ্ট্য – Bangla" lang="bn" hreflang="bn" data-title="কম্পিউটারের রূপগত গঠনবৈশিষ্ট্য" data-language-autonym="বাংলা" data-language-local-name="Bangla" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Factor_de_forma" title="Factor de forma – Catalan" lang="ca" hreflang="ca" data-title="Factor de forma" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Tvarov%C3%BD_faktor" title="Tvarový faktor – Czech" lang="cs" hreflang="cs" data-title="Tvarový faktor" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Formfaktor_(Computertechnik)" title="Formfaktor (Computertechnik) – German" lang="de" hreflang="de" data-title="Formfaktor (Computertechnik)" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Factor_de_forma" title="Factor de forma – Spanish" lang="es" hreflang="es" data-title="Factor de forma" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%B6%D8%B1%DB%8C%D8%A8_%D8%B4%DA%A9%D9%84_(%D8%B7%D8%B1%D8%A7%D8%AD%DB%8C)" title="ضریب شکل (طراحی) – Persian" lang="fa" hreflang="fa" data-title="ضریب شکل (طراحی)" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Facteur_de_forme_(informatique)" title="Facteur de forme (informatique) – French" lang="fr" hreflang="fr" data-title="Facteur de forme (informatique)" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%BB%B4%ED%93%A8%ED%84%B0_%ED%8F%BC_%ED%8C%A9%ED%84%B0" title="컴퓨터 폼 팩터 – Korean" lang="ko" hreflang="ko" data-title="컴퓨터 폼 팩터" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Vormfactor" title="Vormfactor – Dutch" lang="nl" hreflang="nl" data-title="Vormfactor" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%83%95%E3%82%A9%E3%83%BC%E3%83%A0%E3%83%95%E3%82%A1%E3%82%AF%E3%82%BF" title="フォームファクタ – Japanese" lang="ja" hreflang="ja" data-title="フォームファクタ" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Fator_de_forma_(design)" title="Fator de forma (design) – Portuguese" lang="pt" hreflang="pt" data-title="Fator de forma (design)" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%A4%D0%BE%D1%80%D0%BC-%D1%84%D0%B0%D0%BA%D1%82%D0%BE%D1%80_(%D1%82%D0%B5%D1%85%D0%BD%D0%B8%D0%BA%D0%B0)" title="Форм-фактор (техника) – Russian" lang="ru" hreflang="ru" data-title="Форм-фактор (техника)" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Kokoluokka_(tietotekniikka)" title="Kokoluokka (tietotekniikka) – Finnish" lang="fi" hreflang="fi" data-title="Kokoluokka (tietotekniikka)" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Formfaktor" title="Formfaktor – Swedish" lang="sv" hreflang="sv" data-title="Formfaktor" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Bi%C3%A7im_katsay%C4%B1s%C4%B1" title="Biçim katsayısı – Turkish" lang="tr" hreflang="tr" data-title="Biçim katsayısı" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%A4%D0%BE%D1%80%D0%BC%D1%84%D0%B0%D0%BA%D1%82%D0%BE%D1%80" title="Формфактор – Ukrainian" lang="uk" hreflang="uk" data-title="Формфактор" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li 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searchaux" style="display:none">Aspect of design which defines the size, shape, and other physical specifications of hardware</div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:VIA_Mini-ITX_Form_Factor_Comparison.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/11/VIA_Mini-ITX_Form_Factor_Comparison.jpg/350px-VIA_Mini-ITX_Form_Factor_Comparison.jpg" decoding="async" width="350" height="139" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/11/VIA_Mini-ITX_Form_Factor_Comparison.jpg/525px-VIA_Mini-ITX_Form_Factor_Comparison.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/11/VIA_Mini-ITX_Form_Factor_Comparison.jpg/700px-VIA_Mini-ITX_Form_Factor_Comparison.jpg 2x" data-file-width="1787" data-file-height="709" /></a><figcaption>Comparison of some common <a href="/wiki/Motherboard_form_factor" title="Motherboard form factor">motherboard form factors</a> (pen for scale)</figcaption></figure> <p><b>Form factor</b> is a hardware <a href="/wiki/Design" title="Design">design</a> aspect that defines and prescribes the size, shape, and other physical <a href="/wiki/Specification_(technical_standard)" title="Specification (technical standard)">specifications</a> of components, particularly in <a href="/wiki/Consumer_electronics" title="Consumer electronics">electronics</a>.<sup id="cite_ref-webopedia_1-0" class="reference"><a href="#cite_note-webopedia-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-techtarget_2-0" class="reference"><a href="#cite_note-techtarget-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> A form factor may represent a broad class of similarly sized components, or it may prescribe a specific standard. It may also define an entire system, as in a computer form factor. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Evolution_and_standardization">Evolution and standardization</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Form_factor_(design)&action=edit&section=1" title="Edit section: Evolution and standardization"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>As electronic hardware has become smaller following <a href="/wiki/Moore%27s_law" title="Moore's law">Moore's law</a> and related patterns, ever-smaller form factors have become feasible. Specific technological advances, such as <a href="/wiki/PCI_Express" title="PCI Express">PCI Express</a>, have had a significant design impact, though form factors have historically evolved slower than individual components. <a href="/wiki/Standardization" title="Standardization">Standardization</a> of form factors is vital for hardware compatibility between different manufacturers. </p> <div class="mw-heading mw-heading2"><h2 id="Trade-offs">Trade-offs</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Form_factor_(design)&action=edit&section=2" title="Edit section: Trade-offs"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Smaller form factors may offer more efficient use of limited space, greater flexibility in the placement of components within a larger assembly, reduced use of material, and greater ease of transportation and use. However, smaller form factors typically incur greater costs in the <a href="/wiki/Design" title="Design">design</a>, <a href="/wiki/Manufacturing" title="Manufacturing">manufacturing</a>, and <a href="/wiki/Corrective_maintenance" title="Corrective maintenance">maintenance</a> phases of the <a href="/wiki/Product_lifecycle" title="Product lifecycle">engineering lifecycle</a>, and do not allow the same expansion options as larger form factors. In particular, the design of smaller form-factor computers and network equipment must entail careful consideration of <a href="/wiki/Computer_cooling" title="Computer cooling">cooling</a>.<sup id="cite_ref-sff_network_3-0" class="reference"><a href="#cite_note-sff_network-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> <a href="/wiki/End_user" title="End user">End-user</a> maintenance and repair of small form-factor electronic devices such as mobile phones is often not possible, and may be discouraged by <a href="/wiki/Warranty" title="Warranty">warranty</a> <a href="/wiki/Voidable" title="Voidable">voiding</a> clauses; such devices require professional servicing—or simply replacement—when they fail.<sup id="cite_ref-prowse_4-0" class="reference"><a href="#cite_note-prowse-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Examples">Examples<span class="anchor" id="Comparisons"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Form_factor_(design)&action=edit&section=3" title="Edit section: Examples"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:MacBookEeePCNintendoDS.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/7b/MacBookEeePCNintendoDS.JPG/220px-MacBookEeePCNintendoDS.JPG" decoding="async" width="220" height="187" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/7b/MacBookEeePCNintendoDS.JPG/330px-MacBookEeePCNintendoDS.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/7b/MacBookEeePCNintendoDS.JPG/440px-MacBookEeePCNintendoDS.JPG 2x" data-file-width="2000" data-file-height="1696" /></a><figcaption>Size comparison of various mobile form factors (from smallest to largest: <a href="/wiki/Nintendo_DS_Lite" class="mw-redirect" title="Nintendo DS Lite">Nintendo DS Lite</a> <a href="/wiki/Handheld_game_console" title="Handheld game console">handheld</a>, <a href="/wiki/Asus_Eee_PC" title="Asus Eee PC">Asus Eee PC</a> <a href="/wiki/Netbook" title="Netbook">netbook</a>, and <a href="/wiki/MacBook" title="MacBook">MacBook</a> <a href="/wiki/Laptop" title="Laptop">laptop</a>)</figcaption></figure> <p>Computer form factors comprise a number of specific industry standards for <a href="/wiki/Motherboard" title="Motherboard">motherboards</a>, specifying dimensions, <a href="/wiki/Power_supply" title="Power supply">power supplies</a>, placement of mounting holes and <a href="/wiki/Computer_port_(hardware)" title="Computer port (hardware)">ports</a>, and other parameters. Other types of form factors for computers include: </p> <ul><li><a href="/wiki/Small_form_factor_(desktop_and_motherboard)" class="mw-redirect" title="Small form factor (desktop and motherboard)">Small form factor</a> (SFF), a more loosely defined set of standards that may refer to both motherboards and <a href="/wiki/Computer_case" title="Computer case">computer cases</a>. SFF devices include mini-towers and <a href="/wiki/Home_theater_PC" title="Home theater PC">home theater PCs</a>.</li> <li><a href="/wiki/Pizza_box_form_factor" class="mw-redirect" title="Pizza box form factor">Pizza box form factor</a>, a wide, flat case form factor used for computers and network switches; often sized for installation in a <a href="/wiki/19-inch_rack" title="19-inch rack">19-inch rack</a>.</li> <li><a href="/wiki/All-in-one_PC" class="mw-redirect" title="All-in-one PC">All-in-one PC</a></li> <li>"Lunchbox" <a href="/wiki/Portable_computer" title="Portable computer">portable computer</a></li></ul> <div class="mw-heading mw-heading3"><h3 id="Components">Components</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Form_factor_(design)&action=edit&section=4" title="Edit section: Components"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Hard_disk_drive#Form_factors" title="Hard disk drive">Hard disk drive form factors</a>, the physical dimensions of a computer hard drive</li> <li><a href="/wiki/Disk_enclosure" title="Disk enclosure">Hard disk enclosure form factor</a>, the physical dimensions of a computer hard drive enclosure</li> <li><a href="/wiki/Motherboard_form_factor" title="Motherboard form factor">Motherboard form factor</a>, the physical dimensions of a computer motherboard</li> <li>Memory module form factors</li></ul> <div class="mw-heading mw-heading3"><h3 id="Mobile_form_factors">Mobile form factors</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Form_factor_(design)&action=edit&section=5" title="Edit section: Mobile form factors"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Laptop" title="Laptop">Laptop</a> or <a href="/wiki/Notebook_(laptop)" title="Notebook (laptop)">notebook</a>, a form of portable computer with a <a href="/wiki/Clamshell_design" title="Clamshell design">clamshell design</a>.</li> <li><a href="/wiki/Subnotebook" title="Subnotebook">Subnotebook</a>, <a href="/wiki/Ultra-mobile_PC" title="Ultra-mobile PC">ultra-mobile PC</a>, <a href="/wiki/Netbook" title="Netbook">netbook</a>, and <a href="/wiki/Tablet_computer" title="Tablet computer">tablet computer</a>, various form factors for devices that are smaller and often cheaper than a typical notebook.</li> <li><a href="/wiki/Form_factor_(mobile_phones)" title="Form factor (mobile phones)">Mobile phone</a>, including a wide range of sizes and layouts. Broad categories of form factors include bars, <a href="/wiki/Flip_phones" class="mw-redirect" title="Flip phones">flip phones</a>, and sliders, with many subtypes and variations.<sup id="cite_ref-:0_5-0" class="reference"><a href="#cite_note-:0-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> Also include <a href="/wiki/Phablets" class="mw-redirect" title="Phablets">phablets</a> (small tablets) and industrial handheld devices.<sup id="cite_ref-:0_5-1" class="reference"><a href="#cite_note-:0-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/Stick_PC" title="Stick PC">Stick PC</a>, a <a href="/wiki/Single-board_computer" title="Single-board computer">single-board computer</a> in a small elongated casing resembling a stick</li></ul> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Form_factor_(design)&action=edit&section=6" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Computer_hardware" title="Computer hardware">Computer hardware</a></li> <li><a href="/wiki/Electronic_packaging" title="Electronic packaging">Electronic packaging</a></li> <li><a href="/wiki/Packaging_engineering" title="Packaging engineering">Packaging engineering</a></li> <li><a href="/wiki/List_of_computer_size_categories" title="List of computer size categories">List of computer size categories</a></li> <li><a href="/wiki/List_of_integrated_circuit_package_dimensions" class="mw-redirect" title="List of integrated circuit package dimensions">List of integrated circuit package dimensions</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Notes">Notes</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Form_factor_(design)&action=edit&section=7" title="Edit section: Notes"><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 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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 center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.webopedia.com/TERM/F/form_factor.html">"Form factor"</a>. <i>Webopedia</i>. 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