{"product_id":"sfp-h25g-cu2-m","title":"Cisco SFP-H25G-CU2M 25GBASE-CR1 SFP28 Passive DAC Cable — 2m, New","description":"\u003cp\u003e\u003cstrong\u003e25GBASE-CR1 passive DAC — SFP28 to SFP28 copper twinax, not optical AOC\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCisco SFP-H25G-CU2M — 25G SFP28 passive Direct Attach Copper cable, 2 meter\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCisco Part Number:\u003c\/strong\u003e SFP-H25G-CU2M\u003cbr\u003e\u003cstrong\u003eCommon aliases \/ related PIDs:\u003c\/strong\u003e SFP-H25G-CU1M · SFP-H25G-CU2.5M · SFP-H25G-CU3M · 25GBASE-CR1\u003cbr\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e Passive SFP28-to-SFP28 twinax DAC for short-reach 25 Gigabit Ethernet (25GBASE-CR1)\u003c\/p\u003e\n\u003cp\u003eThis is a genuine Cisco \u003cstrong\u003e2-meter\u003c\/strong\u003e 25GBASE-CR1 passive copper DAC — SFP28 connectors on both ends, brown pull tab per Cisco’s length color code. It is the low-latency, near-zero-power way to link 25G SFP28 ports inside a rack or to an adjacent rack without optics or fiber plant.\u003c\/p\u003e\n\u003cp\u003eLifetime warranty from Resilient Tec.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eWhich One Do I Need?\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eGoing into\u003c\/th\u003e\n\u003cth\u003eYou need\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCisco 25G SFP28 ports, ~2 m reach, no FEC required on host\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eSFP-H25G-CU2M\u003c\/strong\u003e — this product\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSame platforms, 1 m intra-rack\u003c\/td\u003e\n\u003ctd\u003e\n\u003ca href=\"\/products\/sfp-h25g-cu1m-cisco-25gbase-cr1-sfp28-passive-copper-cable-1m\"\u003eSFP-H25G-CU1M\u003c\/a\u003e (1 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSame platforms, 2.5 m (requires BASE-R \/ FC-FEC on host)\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/sfp-h25g-cu2-5m-new\"\u003eSFP-H25G-CU2.5M\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible (third-party) 1 m DAC at a lower ticket\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/sfp-h25gb-cu1m-cisco-compatible-25g-sfp28-passive-dac-cable-1m\"\u003eSFP-H25GB-CU1M Compatible\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLonger reach or fiber plant instead of copper DAC\u003c\/td\u003e\n\u003ctd\u003e25G SFP28 SR\/LR optics + fiber — not this cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eLength and FEC matter.\u003c\/strong\u003e Cisco rates 1 m \/ 1.5 m \/ 2 m passive DACs without host FEC; \u003cstrong\u003e2.5 m and 3 m require BASE-R (FC-FEC)\u003c\/strong\u003e; 4 m \/ 5 m require RS-FEC. Confirm FEC capability on your Nexus\/Catalyst hosts before ordering past 2 m.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eSFP-H25G-CU2M\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForm Factor\u003c\/td\u003e\n\u003ctd\u003eSFP28 to SFP28\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEthernet Standard\u003c\/td\u003e\n\u003ctd\u003eIEEE 802.3by 25GBASE-CR1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Rate\u003c\/td\u003e\n\u003ctd\u003e25 Gbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable Type\u003c\/td\u003e\n\u003ctd\u003ePassive Direct Attach Copper (twinax DAC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable Length\u003c\/td\u003e\n\u003ctd\u003e2 meters (6.6 ft)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWire Gauge\u003c\/td\u003e\n\u003ctd\u003e30 AWG (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePull Tab Color\u003c\/td\u003e\n\u003ctd\u003eBrown (Cisco length code)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003ePassive, ~0.1 W max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHost FEC\u003c\/td\u003e\n\u003ctd\u003eNot required (≤ 2 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0°C to 70°C (commercial)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandards\u003c\/td\u003e\n\u003ctd\u003eIEEE 802.3by, SFF-8402, SFP28 MSA, RoHS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eCisco switches\/servers with 25G SFP28 ports (e.g. Nexus 9000\/3000, Catalyst 9300\/9400\/9500)\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\u003ctr\u003e\n\u003ctd\u003eCondition\u003c\/td\u003e\n\u003ctd\u003eNew\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch2\u003eNote on Passive DAC vs Optics\u003c\/h2\u003e\n\u003cp\u003ePassive DACs draw essentially no power and add almost no latency — ideal for ToR switch-to-server and switch-to-switch links inside or between adjacent racks. They are \u003cstrong\u003enot\u003c\/strong\u003e a substitute for SR\/LR optics when you need fiber plant, longer reach, or optical isolation.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eGood to Know\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Cisco PID — EEPROM coded for Cisco 25G SFP28 platforms.\u003c\/li\u003e\n\u003cli\u003eHot-pluggable; no configuration required beyond enabling the port.\u003c\/li\u003e\n\u003cli\u003e2 m is the longest Cisco passive length that typically does \u003cstrong\u003enot\u003c\/strong\u003e require host FEC.\u003c\/li\u003e\n\u003cli\u003eNew condition — factory-new inventory from Resilient Tec stock.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eQuick Checklist — Is This the Right Cable?\u003c\/h2\u003e\n\u003cp\u003eYou have two \u003cstrong\u003e25G SFP28\u003c\/strong\u003e cages. The run is about \u003cstrong\u003e2 meters\u003c\/strong\u003e. You want a \u003cstrong\u003epassive copper DAC\u003c\/strong\u003e, not an AOC or optic+fiber. Your host does not need FEC for ≤ 2 m links. You specifically need the Cisco \u003cstrong\u003eSFP-H25G-CU2M\u003c\/strong\u003e PID.\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\u003eIn stock at Resilient Tec · Ships from Knoxville, TN.\u003c\/strong\u003e\u003cbr\u003eNeed 1 m, 2.5 m, or another length in the SFP-H25G-CUxM family? Ask and we will point you at the right sibling. \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.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eYou Might Also Need\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/sfp-h25g-cu1m-cisco-25gbase-cr1-sfp28-passive-copper-cable-1m\"\u003eCisco SFP-H25G-CU1M — 25G DAC, 1 m, New\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/sfp-h25g-cu2-5m-new\"\u003eCisco SFP-H25G-CU2.5M — 25G DAC, 2.5 m, New\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/sfp-h25gb-cu1m-cisco-compatible-25g-sfp28-passive-dac-cable-1m\"\u003eSFP-H25GB-CU1M Cisco Compatible — 25G DAC, 1 m\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/pages\/product-guides\"\u003eProduct guides\u003c\/a\u003e · \u003ca href=\"\/pages\/request-a-quote\"\u003eRequest a quote\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eRelated Guides\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/lifetime-warranty\"\u003eLifetime warranty — how Resilient Tec backs what we sell\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/request-a-quote\"\u003eRequest a quote for 25G DAC fills and spare kits\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/product-guides\"\u003eProduct guides\u003c\/a\u003e\u003c\/p\u003e\n","brand":"Cisco","offers":[{"title":"Default Title","offer_id":50894347894884,"sku":"SFP-H25G-CU2M","price":215.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/3482\/4548\/files\/Screenshot2026-10-06132512.png?v=1791307619","url":"https:\/\/resilient-tec.com\/products\/sfp-h25g-cu2-m","provider":"Resilient Tec","version":"1.0","type":"link"}