{"product_id":"25g-sfp28-dac-cable-sfp28-to-sfp28-3m-passive-twinax","title":"25G SFP28 DAC Cable SFP28 to SFP28 3m - Passive Twinax","description":"\u003cp\u003eIn this review the 25G SFP28 DAC Cable is evaluated as a practical, no-frills link for short rack and adjacent-rack connections. It is aimed at network engineers and data center technicians who need a reliable, low-latency 25G direct-attach copper solution without the cost or complexity of optics. The single biggest reason to buy is straightforward compatibility with common SFP28 ports and Cisco SFP-H25G-CU3M environments, delivering a simple, tested 25G copper connection that just works for short runs.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e25G Ethernet support:\u003c\/strong\u003e Provides a full 25GBASE-CU copper connection for high-throughput short links inside racks or between adjacent racks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePassive twinax design:\u003c\/strong\u003e The passive SFP28 to SFP28 twinax cable keeps power draw and latency low, making it suitable for high-performance switching and server links.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCisco compatibility:\u003c\/strong\u003e Marketed as compatible with Cisco SFP-H25G-CU3M ports and common SFF-8402\/SFF-8432 interfaces for plug-and-play deployment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3 meter length:\u003c\/strong\u003e The 3m (9.8ft) length covers typical rack-to-rack and in-rack cabling runs while avoiding excess cable slack.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality tested:\u003c\/strong\u003e Each cable is tested for interoperability in host devices, reducing the risk of link failures or negotiation issues in targeted switch environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuad-shielded 30AWG twinax:\u003c\/strong\u003e The durable construction and shielding help maintain signal integrity up to the rated speed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis cable is best for data center operators, network administrators, and systems integrators who need a cost-effective 25G copper link for short distances and who prefer the simplicity of a passive direct-attach cable over SFP28 optics. It fits well where multiple identical, short, high-bandwidth links are needed between switches, servers, or network adapters.\u003c\/p\u003e\n\u003cp\u003eIt is not intended for long-distance runs or situations that require hot-pluggable fiber transceivers or active optical modules. If your infrastructure requires longer reach, pluggable optics, or active cable features, look for fiber SFP28 modules or active DACs instead.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSimple passive twinax design delivers low latency and stable 25G links for short distances.\u003c\/li\u003e\n\u003cli\u003eCompatibility with common SFP28 interfaces and Cisco SFP-H25G-CU3M style ports enables easy integration into many environments.\u003c\/li\u003e\n\u003cli\u003eEach unit is tested for interoperability, which reduces deployment troubleshooting.\u003c\/li\u003e\n\u003cli\u003eRobust quad-shielded 30AWG construction supports signal integrity in dense racks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePassive copper is limited to very short links; it will not replace fiber for long-reach connections.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eForm Factor\u003c\/td\u003e\n\u003ctd\u003eSFP28 to SFP28 direct attach copper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e3 m (9.8 ft)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Rate\u003c\/td\u003e\n\u003ctd\u003eUp to 25.78125 Gbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable Type\u003c\/td\u003e\n\u003ctd\u003ePassive quad-shielded 30AWG twinaxial\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eCompatible with Cisco SFP-H25G-CU3M and SFF-8402\/SFF-8432 ports\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUse Case\u003c\/td\u003e\n\u003ctd\u003eShort rack and adjacent-rack 25G connections\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe 25G SFP28 DAC Cable is a sensible choice for on-rack and adjacent-rack 25G links where cost, low latency, and compatibility matter. Its tested interoperability and passive twinax design make it good value for operators who need dependable short-range 25G connections without the expense of optics. For longer reaches or fiber-only environments, select a different transceiver type.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this cable compatible with Cisco switches?\u003c\/strong\u003e\u003cbr\u003eYes, it is compatible with switches that accept SFP28 copper modules and is marketed as compatible with Cisco SFP-H25G-CU3M style ports.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat maximum distance does it support?\u003c\/strong\u003e\u003cbr\u003eAs a passive DAC, it is intended for very short links such as in-rack or adjacent-rack runs; the supplied length is 3 m (9.8 ft).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it work with 32G Fiber Channel or InfiniBand?\u003c\/strong\u003e\u003cbr\u003eThe cable is constructed to support multiple platforms including 25G Ethernet and has multi-platform support listed for related standards; confirm device compatibility before deploying in non-Ethernet networks.\u003c\/p\u003e","brand":"Macroreer","offers":[{"title":"Default Title","offer_id":48204836896987,"sku":"B0792XZ1G6","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71Hy9Obz2gL._SL1500.jpg?v=1770193816","url":"https:\/\/gearmusthave.com\/products\/25g-sfp28-dac-cable-sfp28-to-sfp28-3m-passive-twinax","provider":"GearMustHave","version":"1.0","type":"link"}