{"product_id":"qsfp-4sfp10g-cu5m-cisco-compatible-40g-qsfp-to-4x-10g-sfp-passive-breakout-dac-5m","title":"Cisco QSFP-4SFP10G-CU5M Compatible 40G QSFP+ to 4x 10G SFP+ Passive Breakout DAC — 5m (16ft)","description":"\u003cp\u003e\u003cstrong\u003eTurn one 40G QSFP+ port into four 10G SFP+ links — at 5 meters, for the rack next door\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCisco QSFP-4SFP10G-CU5M compatible — 40GBASE-CR4 QSFP+ to 4x 10GBASE-CU SFP+, passive copper, 5m\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"border-left: 3px solid #1e8f5e; background: #f7f8fa; padding: 10px 14px; margin: 14px 0;\"\u003e→ \u003cstrong\u003eThe switch port must support breakout.\u003c\/strong\u003e Before you buy, confirm the QSFP+ port on your switch can be split into 4x 10G in software. Not every 40G port can.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCompatible with:\u003c\/strong\u003e Cisco QSFP-4SFP10G-CU5M\u003cbr\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e QSFP-4SFP10G-CU5M\u003cbr\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e Passive direct-attach copper breakout cable, QSFP+ (40GBASE-CR4) to four SFP+ (10GBASE-CU), 5 m\u003c\/p\u003e\n\u003cp\u003eA breakout cable splits one 40G QSFP+ port into four independent 10G SFP+ connections. The usual use is a 40G switch port feeding four 10G servers, or a 40G port feeding a 10G switch.\u003c\/p\u003e\n\u003cp\u003eThis is a passive cable, so it draws almost no power and adds no optics. At 5 m it is the longest typical passive length for this cable type; past that, use optics or an active cable.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eWhich One Do I Need?\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eDistance and need\u003c\/th\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e40G port to four 10G ports, up to 5 m\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eQSFP-4SFP10G-CU5M\u003c\/strong\u003e — this listing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10G SFP+ to SFP+, up to 3 m\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/cisco-sfp-h10gb-cu3m-10gbase-cu-sfp-direct-attach-cable-new\"\u003eCisco SFP-H10GB-CU3M\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e100G port to four 25G ports\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/qsfp-4sfp25g-cu1m-cisco-compatible-100g-qsfp28-to-4xsfp25g-passive-breakout-dac-cable-1m\"\u003eQSFP-4SFP25G-CU1M — 100G to 4x 25G\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e40G over fiber instead of copper\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/cisco-qsfp-40g-sr4-40gbase-sr4-qsfp-transceiver-new\"\u003eCisco QSFP-40G-SR4 transceiver\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible part number\u003c\/td\u003e\n\u003ctd\u003eCisco QSFP-4SFP10G-CU5M\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnds\u003c\/td\u003e\n\u003ctd\u003e1x QSFP+ (40GBASE-CR4) to 4x SFP+ (10GBASE-CU)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAggregate data rate\u003c\/td\u003e\n\u003ctd\u003e40 Gb\/s (4 x 10 Gb\/s)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable type\u003c\/td\u003e\n\u003ctd\u003ePassive twinax copper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e5 m (16.4 ft)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoding\u003c\/td\u003e\n\u003ctd\u003eCoded for Cisco\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCondition\u003c\/td\u003e\n\u003ctd\u003eNew\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003eLifetime, backed by Resilient Tec\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003eSource: Cisco 40GBASE QSFP modules data sheet (\u003ca href=\"https:\/\/www.cisco.com\/c\/en\/us\/products\/collateral\/interfaces-modules\/transceiver-modules\/data_sheet_c78-660083.html\" target=\"_blank\" rel=\"noopener\"\u003eCisco\u003c\/a\u003e) for the QSFP-4SFP10G-CU5M part definition.\u003c\/em\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eGood to Know\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBreakout is a port setting.\u003c\/strong\u003e On most Cisco switches you enable 4x10G on the QSFP+ port in the configuration; the cable alone does not do it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour ends, four ports.\u003c\/strong\u003e Each SFP+ leg is its own 10G link with its own port on the far side.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlan cable slack.\u003c\/strong\u003e A 5 m twinax breakout is thick and fairly stiff; route it before you lock down the rack.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eQuick Checklist — Is This the Right Cable?\u003c\/h2\u003e\n\u003cp\u003eYour switch has a 40G QSFP+ port that supports 4x10G breakout. You are connecting four 10G SFP+ ports within about 5 m. You want passive copper rather than optics.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eAvailability\u003c\/h2\u003e\n\u003cp style=\"border-left: 3px solid #1e8f5e; background: #f7f8fa; padding: 10px 14px; margin: 14px 0;\"\u003e\u003cstrong\u003eNew, coded and tested · Ships from Resilient Tec in Knoxville, TN · Free standard shipping on US orders.\u003c\/strong\u003e\u003cbr\u003eWe confirm stock and lead time with you before an order ships. Need a different length or a different coding on each end? We can build it. \u003ca href=\"\/pages\/request-a-quote\"\u003e\u003cstrong\u003eRequest a quote →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWarranty:\u003c\/strong\u003e lifetime, \u003ca href=\"\/pages\/lifetime-warranty\"\u003ebacked by Resilient Tec\u003c\/a\u003e — not a manufacturer term. When something fails you reach a named seller in the US, not a ticket queue.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eYou Might Also Need\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/cisco-qsfp-40g-sr4-40gbase-sr4-qsfp-transceiver-new\"\u003eCisco QSFP-40G-SR4\u003c\/a\u003e — 40G over multimode fiber\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/cisco-sfp-h10gb-cu3m-10gbase-cu-sfp-direct-attach-cable-new\"\u003eCisco SFP-H10GB-CU3M\u003c\/a\u003e — 10G to 10G copper\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/custom-double-programmed-dac-and-aoc-solutions-from-resilient-tec-connect-any-hardware-any-way-you-need\"\u003eCustom dual-coded DAC and AOC builds\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eRelated Guides\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/breakout-cables-guide\"\u003eBreakout Cables Guide\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/dac-cables-guide\"\u003eDAC Cables Guide\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/compatibility-testing\"\u003eCompatibility and Testing\u003c\/a\u003e\u003c\/p\u003e","brand":"Resilient Tec","offers":[{"title":"Default Title","offer_id":68148480770148,"sku":"QSFP-4SFP10G-CU5M","price":97.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/3482\/4548\/files\/QSFP-4SFP10G-CU5M_1.jpg?v=1794515793","url":"https:\/\/resilient-tec.com\/products\/qsfp-4sfp10g-cu5m-cisco-compatible-40g-qsfp-to-4x-10g-sfp-passive-breakout-dac-5m","provider":"Resilient Tec","version":"1.0","type":"link"}