{"product_id":"100g-qsfp28-dac-3m-passive-twinax-cable-low-latency-100gbps","title":"100G QSFP28 DAC 3M Passive Twinax Cable - Low-Latency 100Gbps","description":"\u003cp\u003eIn this review of the 100G QSFP28 DAC 3M passive twinax cable, the bottom line is simple: this cable is for networking engineers and data center technicians who need a reliable, low-latency 100Gbps link for short runs. The reviewer found the cable to be straightforward to deploy, fully passive and power-efficient, and broadly compatible with equipment that supports QSFP-100G-CU3M style DACs. It is especially useful where minimal insertion loss and near-zero added latency matter, and the cable arrives tested and ready to use with no additional software required.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003e100Gbps performance:\u003c\/strong\u003e Provides a full 100G data rate for high-bandwidth server and switch interconnects without active electronics.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePassive twinax design:\u003c\/strong\u003e Being passive keeps power consumption below 0.2W and reduces thermal and power requirements in dense racks.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e3 meter length:\u003c\/strong\u003e The 3m (approximately 10ft) reach fits common top-of-rack to adjacent-rack connections in data centers and lab racks.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eTested reliability:\u003c\/strong\u003e Each cable is TDR and VNA tested and individually checked on switches before shipping, which reduces the risk of early failures.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePlug-and-play:\u003c\/strong\u003e Hot-pluggable QSFP28 to QSFP28 connectors require no drivers or software, speeding installation and swaps during maintenance.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDurable finish:\u003c\/strong\u003e Gold-plated plugs and a PVC OFNR jacket provide repeated mating reliability and standard flame rating for rack environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe cable is best for network administrators and data center operators who need an economical, low-power 100G link for short distances between switches, top-of-rack equipment, or NICs that accept QSFP28 DACs. It is also suited to lab environments where repeatable, tested cabling helps validate setups quickly.\u003c\/p\u003e\n\u003cp\u003eIt is less appropriate for long-distance fiber runs or for environments requiring active optical modules; if you need runs beyond a few meters or optical isolation, look at fiber transceivers 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\u003eHigh throughput at 100Gbps with very low latency, ideal for short interconnects.\u003c\/li\u003e\n \u003cli\u003ePassive construction keeps power consumption under 0.2W, reducing heat and power load.\u003c\/li\u003e\n \u003cli\u003eEach cable is individually TDR and VNA tested and validated on switches, improving out-of-box reliability.\u003c\/li\u003e\n \u003cli\u003ePlug-and-play QSFP28 connectors make deployment quick with no drivers required.\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; it is not a replacement for fiber over longer runs.\u003c\/li\u003e\n \u003cli\u003ePVC OFNR jacket is standard for rack use but may not suit specialized outdoor or harsh-environment installations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n\u003ctd\u003eMax Data Rate\u003c\/td\u003e\n\u003ctd\u003e100Gbps\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eConnector Type\u003c\/td\u003e\n\u003ctd\u003eQSFP28 to QSFP28\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eCable Length\u003c\/td\u003e\n\u003ctd\u003e3m (10ft)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eWire AWG\u003c\/td\u003e\n\u003ctd\u003e30AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eJacket Material\u003c\/td\u003e\n\u003ctd\u003ePVC (OFNR)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.2W\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 to 70C (32 to 158F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe 100G QSFP28 3m passive twinax cable is a practical, cost-effective solution for short-distance 100Gbps links where low latency and low power draw are priorities. Because it ships tested and is plug-and-play, it offers good out-of-box reliability and value for rack-level interconnects; teams needing longer runs or optical isolation should select fiber alternatives.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this cable work with Cisco QSFP-100G-CU3M equipment?\u003c\/strong\u003e\u003cbr\u003eYes, the cable is designed to be widely compatible with Cisco QSFP-100G-CU3M style ports and similar QSFP28 slots that support passive DACs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this cable require any drivers or external power?\u003c\/strong\u003e\u003cbr\u003eNo, it is passive and hot-pluggable so no drivers or extra power are required beyond the device ports.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat environments is this cable intended for?\u003c\/strong\u003e\u003cbr\u003eIt is intended for short rack and data center interconnects within the specified 3m length and standard indoor rack environments using a PVC OFNR jacket.\u003c\/p\u003e","brand":"QSFPTEK","offers":[{"title":"Default Title","offer_id":48252553167067,"sku":"B09F95CVF7","price":104.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51bZY5Fdj8L._SL1500_5a4c2964-a8c7-431c-82e4-bb45cde915bb.jpg?v=1778265521","url":"https:\/\/gearmusthave.com\/products\/100g-qsfp28-dac-3m-passive-twinax-cable-low-latency-100gbps","provider":"GearMustHave","version":"1.0","type":"link"}