{"id":9737,"date":"2025-06-20T11:00:27","date_gmt":"2025-06-20T03:00:27","guid":{"rendered":"https:\/\/totcables.com\/?p=9737"},"modified":"2025-06-20T11:00:27","modified_gmt":"2025-06-20T03:00:27","slug":"crossover-cable-wiring-what-it-is-and-how-to-wire-it","status":"publish","type":"post","link":"https:\/\/totcables.com\/?p=9737","title":{"rendered":"Crossover Cable Wiring: What It Is and How to Wire It"},"content":{"rendered":"<p>{&#8220;main-title&#8221;:{&#8220;component&#8221;:&#8221;hc_title&#8221;,&#8221;id&#8221;:&#8221;main-title&#8221;,&#8221;title&#8221;:&#8221;&#8221;,&#8221;subtitle&#8221;:&#8221;When setting up a direct connection between two computers or networking devices of the same type, you may need a crossover cable instead of a standard Ethernet cable. In this guide, we explain what a crossover cable is, when to use it, and how to wire one correctly using the T568A and T568B standards.&#8221;,&#8221;title_content&#8221;:{&#8220;component&#8221;:&#8221;hc_title_image&#8221;,&#8221;id&#8221;:&#8221;title-image&#8221;,&#8221;image&#8221;:&#8221;https:\/\/totcables.com\/wp-content\/uploads\/2025\/06\/crossover-cable-wiring.webp|401|800|9738&#8243;,&#8221;full_screen&#8221;:false,&#8221;full_screen_height&#8221;:&#8221;&#8221;,&#8221;parallax&#8221;:false,&#8221;bleed&#8221;:&#8221;&#8221;,&#8221;ken_burn&#8221;:&#8221;&#8221;,&#8221;overlay&#8221;:&#8221;transparent-dark&#8221;,&#8221;breadcrumbs&#8221;:true,&#8221;white&#8221;:true,&#8221;position&#8221;:&#8221;&#8221;}},&#8221;section_5ZtkF&#8221;:{&#8220;component&#8221;:&#8221;hc_section&#8221;,&#8221;id&#8221;:&#8221;section_5ZtkF&#8221;,&#8221;section_width&#8221;:&#8221;&#8221;,&#8221;animation&#8221;:&#8221;&#8221;,&#8221;animation_time&#8221;:&#8221;&#8221;,&#8221;timeline_animation&#8221;:&#8221;&#8221;,&#8221;timeline_delay&#8221;:&#8221;&#8221;,&#8221;timeline_order&#8221;:&#8221;&#8221;,&#8221;vertical_row&#8221;:&#8221;&#8221;,&#8221;box_middle&#8221;:&#8221;&#8221;,&#8221;css_classes&#8221;:&#8221;&#8221;,&#8221;custom_css_classes&#8221;:&#8221;&#8221;,&#8221;custom_css_styles&#8221;:&#8221;&#8221;,&#8221;section_content&#8221;:[{&#8220;component&#8221;:&#8221;hc_column&#8221;,&#8221;id&#8221;:&#8221;column_vtfQF&#8221;,&#8221;column_width&#8221;:&#8221;col-md-12&#8243;,&#8221;animation&#8221;:&#8221;&#8221;,&#8221;animation_time&#8221;:&#8221;&#8221;,&#8221;timeline_animation&#8221;:&#8221;&#8221;,&#8221;timeline_delay&#8221;:&#8221;&#8221;,&#8221;timeline_order&#8221;:&#8221;&#8221;,&#8221;css_classes&#8221;:&#8221;&#8221;,&#8221;custom_css_classes&#8221;:&#8221;&#8221;,&#8221;custom_css_styles&#8221;:&#8221;&#8221;,&#8221;main_content&#8221;:[{&#8220;component&#8221;:&#8221;hc_wp_editor&#8221;,&#8221;id&#8221;:&#8221;Xhugf&#8221;,&#8221;css_classes&#8221;:&#8221;&#8221;,&#8221;custom_css_classes&#8221;:&#8221;&#8221;,&#8221;custom_css_styles&#8221;:&#8221;&#8221;,&#8221;editor_content&#8221;:&#8221;<\/p>\n<p data-start='176' data-end='482'>When setting up a direct connection between two computers or networking devices of the same type, you may need a <strong data-start='289' data-end='308'>crossover cable<\/strong> instead of a standard Ethernet cable. In this guide, we explain what a crossover cable is, when to use it, and how to wire one correctly using the T568A and T568B standards.<\/p>\n<p>\\n\\n\\n<div id=\"attachment_9738\" style=\"width: 810px\" class=\"wp-caption aligncenter\"><img aria-describedby=\"caption-attachment-9738\" class='wp-image-9738 size-full' src='https:\/\/totcables.com\/wp-content\/uploads\/2025\/06\/crossover-cable-wiring.webp' alt='crossover cable wiring' width='800' height='401'><p id=\"caption-attachment-9738\" class=\"wp-caption-text\">crossover cable wiring<\/p><\/div>\\n\\n<\/p>\n<hr data-start='484' data-end='487'>\\n\\n<\/p>\n<h2 data-start='489' data-end='521'>\ud83d\udd0c What Is a Crossover Cable?<\/h2>\n<p>\\n<\/p>\n<p data-start='523' data-end='746'>A <strong data-start='525' data-end='544'>crossover cable<\/strong> is a type of Ethernet cable where the <strong data-start='583' data-end='632'>transmit and receive signal pairs are swapped<\/strong>, allowing two similar devices (e.g., two computers) to communicate directly <strong data-start='709' data-end='745'>without a hub, switch, or router<\/strong>.<\/p>\n<p>\\n\\n<\/p>\n<blockquote data-start='748' data-end='861'><p>\\n<\/p>\n<p data-start='750' data-end='861'>\ud83d\udd04 In a crossover cable, <strong data-start='775' data-end='792'>TX (transmit)<\/strong> pins on one end are connected to <strong data-start='826' data-end='842'>RX (receive)<\/strong> pins on the other.<\/p>\n<p>\\n<\/p><\/blockquote>\n<p>\\n\\n<\/p>\n<hr data-start='863' data-end='866'>\\n\\n<\/p>\n<h2 data-start='868' data-end='903'>\ud83e\uddf0 When to Use a Crossover Cable<\/h2>\n<p>\\n<\/p>\n<p data-start='905' data-end='945'>Crossover cables are typically used for:<\/p>\n<p>\\n\\n<\/p>\n<ul data-start='947' data-end='1173'>\\n \\t<\/p>\n<li data-start='947' data-end='982'>\\n\n<p data-start='949' data-end='982'>Connecting <strong data-start='960' data-end='971'>two PCs<\/strong> directly<\/p>\n<p>\\n<\/li>\n<p>\\n \\t<\/p>\n<li data-start='983' data-end='1048'>\\n\n<p data-start='985' data-end='1048'>Linking <strong data-start='993' data-end='1025'>two network switches or hubs<\/strong> without uplink ports<\/p>\n<p>\\n<\/li>\n<p>\\n \\t<\/p>\n<li data-start='1049' data-end='1112'>\\n\n<p data-start='1051' data-end='1112'>Networking <strong data-start='1062' data-end='1087'>two routers or modems<\/strong> in peer-to-peer setups<\/p>\n<p>\\n<\/li>\n<p>\\n \\t<\/p>\n<li data-start='1113' data-end='1173'>\\n\n<p data-start='1115' data-end='1173'>Transferring files between devices without internet access<\/p>\n<p>\\n<\/li>\n<p>\\n<\/ul>\n<p>\\n<\/p>\n<p data-start='1175' data-end='1366'>Note: Many modern devices support <strong data-start='1209' data-end='1223'>Auto MDI-X<\/strong>, which auto-detects crossover, making dedicated crossover cables less common today\u2014but they\u2019re still useful in older or specific environments.<\/p>\n<p>\\n\\n\\n<\/p>\n<hr data-start='1368' data-end='1371'>\\n\\n<\/p>\n<h2 data-start='1373' data-end='1416'>\ud83e\uddf5 Crossover Cable Wiring Diagram (RJ45)<\/h2>\n<p>\\n<\/p>\n<p data-start='1418' data-end='1474'>Crossover cables follow different standards on each end:<\/p>\n<p>\\n\\n<\/p>\n<div class='_tableContainer_16hzy_1'>\\n<\/p>\n<div class='_tableWrapper_16hzy_14 group flex w-fit flex-col-reverse' tabindex='-1'>\\n<\/p>\n<table class='w-fit min-w-(--thread-content-width)' data-start='1476' data-end='1933'>\\n<\/p>\n<thead data-start='1476' data-end='1553'>\\n<\/p>\n<tr data-start='1476' data-end='1553'>\\n<\/p>\n<th data-start='1476' data-end='1486' data-col-size='sm'><strong data-start='1478' data-end='1485'>Pin<\/strong><\/th>\n<p>\\n<\/p>\n<th data-start='1486' data-end='1519' data-col-size='sm'><strong data-start='1488' data-end='1514'>T568A End (Wire Color)<\/strong><\/th>\n<p>\\n<\/p>\n<th data-start='1519' data-end='1553' data-col-size='sm'><strong data-start='1521' data-end='1547'>T568B End (Wire Color)<\/strong><\/th>\n<p>\\n<\/tr>\n<p>\\n<\/thead>\n<p>\\n<\/p>\n<tbody data-start='1630' data-end='1933'>\\n<\/p>\n<tr data-start='1630' data-end='1705'>\\n<\/p>\n<td data-start='1630' data-end='1640' data-col-size='sm'>1<\/td>\n<p>\\n<\/p>\n<td data-start='1640' data-end='1672' data-col-size='sm'>White\/Green<\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='1672' data-end='1705'>White\/Orange<\/td>\n<p>\\n<\/tr>\n<p>\\n<\/p>\n<tr data-start='1706' data-end='1781'>\\n<\/p>\n<td data-start='1706' data-end='1716' data-col-size='sm'>2<\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='1716' data-end='1748'>Green<\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='1748' data-end='1781'>Orange<\/td>\n<p>\\n<\/tr>\n<p>\\n<\/p>\n<tr data-start='1782' data-end='1857'>\\n<\/p>\n<td data-start='1782' data-end='1792' data-col-size='sm'>3<\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='1792' data-end='1824'>White\/Orange<\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='1824' data-end='1857'>White\/Green<\/td>\n<p>\\n<\/tr>\n<p>\\n<\/p>\n<tr data-start='1858' data-end='1933'>\\n<\/p>\n<td data-start='1858' data-end='1868' data-col-size='sm'>6<\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='1868' data-end='1900'>Orange<\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='1900' data-end='1933'>Green<\/td>\n<p>\\n<\/tr>\n<p>\\n<\/tbody>\n<p>\\n<\/table>\n<p>\\n<\/p>\n<div class='sticky end-(--thread-content-margin) h-0 self-end select-none'>\\n<\/p>\n<div class='absolute end-0 flex items-end'><\/div>\n<p>\\n<\/p><\/div>\n<p>\\n<\/p><\/div>\n<p>\\n<\/p><\/div>\n<p>\\n<\/p>\n<p data-start='1935' data-end='2042'>Other wires (pins 4, 5, 7, 8) are typically unused for 10\/100 Mbps Ethernet and are wired straight through.<\/p>\n<p>\\n\\n<\/p>\n<blockquote data-start='2044' data-end='2110'><p>\\n<\/p>\n<p data-start='2046' data-end='2110'>\ud83d\udee0 Only pins 1, 2, 3, and 6 are swapped to create the crossover.<\/p>\n<p>\\n<\/p><\/blockquote>\n<p>\\n\\n<\/p>\n<hr data-start='2112' data-end='2115'>\\n\\n<\/p>\n<h3 data-start='2117' data-end='2148'>\ud83d\udcf7 Visual Wiring Reference:<\/h3>\n<p>\\n<\/p>\n<div class='contain-inline-size rounded-2xl relative bg-token-sidebar-surface-primary'>\\n<\/p>\n<div class='flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between h-9 bg-token-sidebar-surface-primary select-none rounded-t-2xl'>\\n<\/p>\n<table class='w-fit min-w-(--thread-content-width)' data-start='568' data-end='903'>\\n<\/p>\n<thead data-start='568' data-end='623'>\\n<\/p>\n<tr data-start='568' data-end='623'>\\n<\/p>\n<th data-start='568' data-end='589' data-col-size='sm'><strong data-start='570' data-end='583'>T568A End<\/strong><\/th>\n<p>\\n<\/p>\n<th data-start='589' data-end='601' data-col-size='sm'><\/th>\n<p>\\n<\/p>\n<th data-start='601' data-end='623' data-col-size='sm'><strong data-start='603' data-end='616'>T568B End<\/strong><\/th>\n<p>\\n<\/tr>\n<p>\\n<\/thead>\n<p>\\n<\/p>\n<tbody data-start='680' data-end='903'>\\n<\/p>\n<tr data-start='680' data-end='735'>\\n<\/p>\n<td data-start='680' data-end='701' data-col-size='sm'>Pin 1: White\/Green<\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='701' data-end='712'>\u27f7<\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='712' data-end='735'>Pin 1: White\/Orange<\/td>\n<p>\\n<\/tr>\n<p>\\n<\/p>\n<tr data-start='736' data-end='791'>\\n<\/p>\n<td data-start='736' data-end='757' data-col-size='sm'>Pin 2: Green<\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='757' data-end='768'>\u27f7<\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='768' data-end='791'>Pin 2: Orange<\/td>\n<p>\\n<\/tr>\n<p>\\n<\/p>\n<tr data-start='792' data-end='847'>\\n<\/p>\n<td data-start='792' data-end='813' data-col-size='sm'>Pin 3: White\/Orange<\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='813' data-end='824'>\u27f7<\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='824' data-end='847'>Pin 3: White\/Green<\/td>\n<p>\\n<\/tr>\n<p>\\n<\/p>\n<tr data-start='848' data-end='903'>\\n<\/p>\n<td data-start='848' data-end='869' data-col-size='sm'>Pin 6: Orange<\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='869' data-end='880'>\u27f7<\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='880' data-end='903'>Pin 6: Green<\/td>\n<p>\\n<\/tr>\n<p>\\n<\/tbody>\n<p>\\n<\/table>\n<p>\\n<\/p><\/div>\n<p>\\n<\/p><\/div>\n<p>\\n\\n<\/p>\n<hr data-start='2423' data-end='2426'>\\n\\n<\/p>\n<h2 data-start='2428' data-end='2459'>\ud83e\uddea Testing a Crossover Cable<\/h2>\n<p>\\n<\/p>\n<p data-start='2461' data-end='2492'>To verify your crossover cable:<\/p>\n<p>\\n\\n<\/p>\n<ul data-start='2494' data-end='2650'>\\n \\t<\/p>\n<li data-start='2494' data-end='2540'>\\n\n<p data-start='2496' data-end='2540'>Use a <strong data-start='2502' data-end='2518'>cable tester<\/strong> to check continuity<\/p>\n<p>\\n<\/li>\n<p>\\n \\t<\/p>\n<li data-start='2541' data-end='2589'>\\n\n<p data-start='2543' data-end='2589'>Ensure pins 1\u21943 and 2\u21946 are properly swapped<\/p>\n<p>\\n<\/li>\n<p>\\n \\t<\/p>\n<li data-start='2590' data-end='2650'>\\n\n<p data-start='2592' data-end='2650'>Confirm the devices establish a connection when plugged in<\/p>\n<p>\\n<\/li>\n<p>\\n<\/ul>\n<p>\\n\\n<\/p>\n<hr data-start='2652' data-end='2655'>\\n\\n<\/p>\n<h2 data-start='2657' data-end='2692'>\ud83c\udf10 Where to Buy Crossover Cables<\/h2>\n<p>\\n<\/p>\n<p data-start='2694' data-end='2790'>You can make one yourself or buy pre-terminated <strong data-start='2742' data-end='2779'>Cat5e\/Cat6 crossover patch cables<\/strong>. Look for:<\/p>\n<p>\\n\\n<\/p>\n<ul data-start='2792' data-end='2951'>\\n \\t<\/p>\n<li data-start='2792' data-end='2829'>\\n\n<p data-start='2794' data-end='2829'>RJ45 UTP\/FTP Cat5e or Cat6 cables<\/p>\n<p>\\n<\/li>\n<p>\\n \\t<\/p>\n<li data-start='2830' data-end='2884'>\\n\n<p data-start='2832' data-end='2884'>Clearly labeled \u201ccrossover\u201d (not straight-through)<\/p>\n<p>\\n<\/li>\n<p>\\n \\t<\/p>\n<li data-start='2885' data-end='2951'>\\n\n<p data-start='2887' data-end='2951'>Verified compatibility with the network speed (10\/100\/1000 Mbps)<\/p>\n<p>\\n<\/li>\n<p>\\n<\/ul>\n<p>\\n\\n<\/p>\n<hr data-start='2953' data-end='2956'>\\n\\n<\/p>\n<h2 data-start='2958' data-end='3002'>\ud83e\udded Summary: Crossover vs Straight-Through<\/h2>\n<p>\\n<\/p>\n<div class='_tableContainer_16hzy_1'>\\n<\/p>\n<div class='_tableWrapper_16hzy_14 group flex w-fit flex-col-reverse' tabindex='-1'>\\n<\/p>\n<table class='w-fit min-w-(--thread-content-width)' data-start='3004' data-end='3389'>\\n<\/p>\n<thead data-start='3004' data-end='3078'>\\n<\/p>\n<tr data-start='3004' data-end='3078'>\\n<\/p>\n<th data-start='3004' data-end='3027' data-col-size='sm'>Feature<\/th>\n<p>\\n<\/p>\n<th data-start='3027' data-end='3050' data-col-size='sm'>Crossover Cable<\/th>\n<p>\\n<\/p>\n<th data-start='3050' data-end='3078' data-col-size='sm'>Straight-Through Cable<\/th>\n<p>\\n<\/tr>\n<p>\\n<\/thead>\n<p>\\n<\/p>\n<tbody data-start='3155' data-end='3389'>\\n<\/p>\n<tr data-start='3155' data-end='3231'>\\n<\/p>\n<td data-start='3155' data-end='3178' data-col-size='sm'>Use Case<\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='3178' data-end='3202'>Same device types<\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='3202' data-end='3231'>Different device types<\/td>\n<p>\\n<\/tr>\n<p>\\n<\/p>\n<tr data-start='3232' data-end='3313'>\\n<\/p>\n<td data-start='3232' data-end='3255' data-col-size='sm'>Pinout Standard<\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='3255' data-end='3279'>T568A \u2194 T568B<\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='3279' data-end='3313'>T568A \u2194 T568A or T568B \u2194 T568B<\/td>\n<p>\\n<\/tr>\n<p>\\n<\/p>\n<tr data-start='3314' data-end='3389'>\\n<\/p>\n<td data-start='3314' data-end='3337' data-col-size='sm'>Devices<\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='3337' data-end='3360'>PC\u2194PC, Switch\u2194Switch<\/td>\n<p>\\n<\/p>\n<td data-col-size='sm' data-start='3360' data-end='3389'>PC\u2194Switch, Router\u2194Modem<\/td>\n<p>\\n<\/tr>\n<p>\\n<\/tbody>\n<p>\\n<\/table>\n<p>\\n<\/p>\n<div class='sticky end-(--thread-content-margin) h-0 self-end select-none'>\\n<\/p>\n<div class='absolute end-0 flex items-end'><\/div>\n<p>\\n<\/p><\/div>\n<p>\\n<\/p><\/div>\n<p>\\n<\/p><\/div>\n<p>\\n\\n<\/p>\n<hr data-start='3391' data-end='3394'>\\n\\n<\/p>\n<h2 data-start='3396' data-end='3445'>\ud83d\udcde Need Bulk Ethernet Cable for Custom Wiring?<\/h2>\n<p>\\n<\/p>\n<p data-start='3447' data-end='3483'>At <strong data-start='3450' data-end='3470'>TOT Wire &amp; Cable<\/strong>, we provide:<\/p>\n<p>\\n\\n<\/p>\n<ul data-start='3485' data-end='3649'>\\n \\t<\/p>\n<li data-start='3485' data-end='3523'>\\n\n<p data-start='3487' data-end='3523'>Bulk <strong data-start='3492' data-end='3523'>Cat5e\/Cat6 UTP &amp; FTP cables<\/strong><\/p>\n<p>\\n<\/li>\n<p>\\n \\t<\/p>\n<li data-start='3524' data-end='3589'>\\n\n<p data-start='3526' data-end='3589'>Custom <strong data-start='3533' data-end='3553'>crossover wiring<\/strong> and <strong data-start='3558' data-end='3589'>pre-terminated patch cables<\/strong><\/p>\n<p>\\n<\/li>\n<p>\\n \\t<\/p>\n<li data-start='3590' data-end='3649'>\\n\n<p data-start='3592' data-end='3649'>OEM services for IT infrastructure and network installers<\/p>\n<p>\\n<\/li>\n<p>\\n<\/ul>\n<p>\\n<\/p>\n<p data-start='3651' data-end='3714'>\ud83d\udc49 <a class='' href='https:\/\/totcables.com\/contact-us\/' rel='noopener' data-start='3654' data-end='3673'><strong data-start='3655' data-end='3669'>Contact us<\/strong><\/a> for pricing or custom RJ45 wiring needs.<\/p>\n<p>&#8220;}]}],&#8221;section_settings&#8221;:&#8221;&#8221;},&#8221;scripts&#8221;:{},&#8221;css&#8221;:{},&#8221;css_page&#8221;:&#8221;&#8221;,&#8221;template_setting&#8221;:{&#8220;settings&#8221;:{&#8220;id&#8221;:&#8221;settings&#8221;}},&#8221;template_setting_top&#8221;:{},&#8221;page_setting&#8221;:{&#8220;settings&#8221;:[&#8220;lock-mode-off&#8221;]},&#8221;post_type_setting&#8221;:{&#8220;settings&#8221;:{&#8220;image&#8221;:&#8221;https:\/\/totcables.com\/wp-content\/uploads\/2025\/06\/crossover-cable-wiring.webp|401|800|9738&#8243;,&#8221;excerpt&#8221;:&#8221;When setting up a direct connection between two computers or networking devices of the same type, you may need a crossover cable instead of a standard Ethernet cable. In this guide, we explain what a crossover cable is, when to use it, and how to wire one correctly using the T568A and T568B standards.&#8221;,&#8221;extra_1&#8243;:&#8221;&#8221;,&#8221;extra_2&#8243;:&#8221;&#8221;,&#8221;icon&#8221;:{&#8220;icon&#8221;:&#8221;&#8221;,&#8221;icon_style&#8221;:&#8221;&#8221;,&#8221;icon_image&#8221;:&#8221;&#8221;}}}}<\/p>\n","protected":false},"excerpt":{"rendered":"<p>{&#8220;main-title&#8221;:{&#8220;component&#8221;:&#8221;hc_title&#8221;,&#8221;id&#8221;:&#8221;main-title&#8221;,&#8221;title&#8221;:&#8221;&#8221;,&#8221;subtitle&#8221;:&#8221;When setting up a direct connection between two computers or networking devices of the same type, you may need a crossover cable instead of a standard Ethernet cable. 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