{"product_id":"100gbe-qsfp28-dac-twinax-cable-2m-cost-effective-100g-link","title":"100GbE QSFP28 DAC Twinax Cable 2m - Cost-Effective 100G Link","description":"\u003cp\u003eIn this review of the 100GbE QSFP28 DAC Twinax Cable, the bottom line is simple: it is a practical, low-power solution for short-range 100G links between QSFP28 ports. IT professionals who need a reliable, compliant twinax cable for top-of-rack or adjacent-rack connections will appreciate the cable's passive design and optimized signal integrity. The review focuses on real deployment considerations - compatibility with common switch vendors, ease of use, thermal and power behavior, and the overall value compared with active or optical alternatives.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e100GbE QSFP28 Passive Twinax:\u003c\/strong\u003e Provides a plug-and-play way to establish a 100-Gigabit link between QSFP-100G ports without additional transceivers or power draw.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2 meter length:\u003c\/strong\u003e Matches typical rack and adjacent-rack distances so installers get reliable short-reach connectivity without excess slack.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e30AWG construction:\u003c\/strong\u003e Offers a balance of flexibility and durability that keeps signal integrity stable across the 2m span.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards compliant:\u003c\/strong\u003e Meets IEEE 802.3, SFF-8665, and QSFP28 MSA requirements for compatibility across a wide range of switches and open source devices.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow power and EMI:\u003c\/strong\u003e Passive design and optimized form factor minimize power consumption and electromagnetic interference in dense racks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging and support:\u003c\/strong\u003e Arrives in an antistatic bag with a 3 year warranty and lifetime technical support from the manufacturer.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis cable is aimed at data center technicians, network engineers, and small enterprise ops teams who need a cost-effective 100G connection for short distances inside or between racks. It is especially suitable for environments that prioritize low power use and simple plug-and-play installation, including lab racks and production top-of-rack links.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include teams that require longer runs beyond 5 m, environments needing optical isolation, or deployments that demand advanced diagnostics available only with active optical or programmable transceivers.\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\u003eCost-effective solution for short-range 100G links without separate transceivers.\u003c\/li\u003e\n\u003cli\u003ePassive 30AWG twinax design keeps power consumption and EMI low in dense racks.\u003c\/li\u003e\n\u003cli\u003eBroad compatibility with Cisco, Ubiquiti, Mikrotik, Netgear, Supermicro and many open source switches.\u003c\/li\u003e\n\u003cli\u003eShipped in antistatic bag with a 3 year warranty and ongoing technical support.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePassive twinax is limited to short distances compared with optical cables, so it is not suitable for long-span runs.\u003c\/li\u003e\n\u003cli\u003eLacks the advanced monitoring features found on some active optical transceivers.\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\u003eQSFP28 to QSFP28 passive DAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData rate\u003c\/td\u003e\n\u003ctd\u003e100GbE (up to 28.3125Gbps per channel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e2 meter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConductor\u003c\/td\u003e\n\u003ctd\u003e30AWG twinax\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandards\u003c\/td\u003e\n\u003ctd\u003eIEEE 802.3, SFF-8665, QSFP28 MSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temperature\u003c\/td\u003e\n\u003ctd\u003e0 ~ 70 C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoHS\u003c\/td\u003e\n\u003ctd\u003eCompliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe 100GbE QSFP28 DAC Twinax Cable is a practical, high-value pick for short-range 100G connections where low power and simple installation matter. Network teams wanting a reliable, standards-compliant cable for rack-to-rack links will find it hard to beat on cost and power; those needing longer reach or built-in diagnostics should consider optical alternatives.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this cable compatible with major switch vendors?\u003c\/strong\u003e\u003cbr\u003eYes, it is compatible with many vendors including Cisco, Ubiquiti, Mikrotik, Netgear, Supermicro and a range of open source switches when used in QSFP-100G ports.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the maximum supported distance?\u003c\/strong\u003e\u003cbr\u003eThe passive twinax design supports reliable transmission up to the specified short-reach distances (the product supports up to 5 m in the general specification, with this unit being a 2 m cable).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it require external power?\u003c\/strong\u003e\u003cbr\u003eNo, this is a passive DAC that uses a single 3.3V supply from the QSFP28 port and does not need separate power.\u003c\/p\u003e","brand":"Wiitek","offers":[{"title":"Default Title","offer_id":48233399288027,"sku":"B0CDLY5NM9","price":33.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51hNiKZ_ekL._SL1300.jpg?v=1770827870","url":"https:\/\/gearmusthave.com\/products\/100gbe-qsfp28-dac-twinax-cable-2m-cost-effective-100g-link","provider":"GearMustHave","version":"1.0","type":"link"}