{"product_id":"40g-qsfp-dac-cable-5-meter-reliable-40gbe-twinax-link","title":"40G QSFP+ DAC Cable 5-Meter - Reliable 40GbE Twinax Link","description":"\u003cp\u003eIn this review the focus is practical: a 5-meter QSFP+ direct attach copper cable that aims to deliver a simple, high-speed link between QSFP ports. The bottom line is that this 40G DAC is best for network engineers and small datacenter teams who need a low-cost, reliable 40GbE connection between compatible switches and NICs. Customers repeatedly note real-world compatibility and stable throughput, so this cable is worth considering when you need a tested, plug-and-play twinax option.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed to be compatible with Cisco QSFP-H40G-CU5M, Meraki, Supermicro, Mikrotik and other open switch devices so it fits into mixed-brand racks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully tested:\u003c\/strong\u003e Each DAC cable is individually tested before delivery to reduce DOA risk and ensure consistent connectivity out of the box.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5-meter length:\u003c\/strong\u003e The 5 m (16.5 ft) reach covers typical top-of-rack to adjacent-rack connections without the cost or complexity of optical transceivers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePassive twinax design:\u003c\/strong\u003e The direct attach copper construction provides low latency and sustained throughput for server-to-switch and switch-to-switch links.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility lab-backed:\u003c\/strong\u003e Coding and compatibility are validated in a dedicated lab to help ensure the cable interoperates with multiple vendor switches and NICs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis cable is aimed at network administrators, small datacenter operators, and IT teams who need a cost-effective 40GbE link between QSFP+ ports without adding transceivers. It is especially useful when building short-distance connections between racks or pairing servers with expansion switches where optical modules would be unnecessary overhead.\u003c\/p\u003e\n\u003cp\u003eIt is less suitable for long-distance runs or environments that require hot-pluggable optical flexibility; for runs beyond a few meters or when you need media conversion, optical transceivers and fiber are a better choice.\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\u003eProven interoperability with a range of brands, helping to avoid vendor lock-in in heterogeneous environments.\u003c\/li\u003e\n\u003cli\u003eGood build quality and ease of installation reported by customers, making rack deployments straightforward.\u003c\/li\u003e\n\u003cli\u003eCost-effective alternative to optics while delivering low-latency 40GbE links for short distances.\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 runs; it is not appropriate for longer campus or cross-room connections.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct type\u003c\/td\u003e\n\u003ctd\u003eQSFP+ to QSFP+ Direct Attach Copper Twinax\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData rate\u003c\/td\u003e\n\u003ctd\u003e40GbE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e5 meter (16.5 ft)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eCisco QSFP-H40G-CU5M, Meraki MA-CBL-40G-5M, Supermicro, Mikrotik, Open Switch Devices\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTesting\u003c\/td\u003e\n\u003ctd\u003eIndividually tested before delivery; compatibility lab validation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003ePassive direct attach copper twinax\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eFor teams that need reliable short-distance 40GbE links, this 5-meter QSFP+ DAC is an economical and dependable choice backed by compatibility testing. It delivers good build quality, easy installation and consistent speed for switch-to-switch and server-to-switch links, making it good value for constrained budgets where optical transceivers are unnecessary.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this work with my Cisco or Meraki switch?\u003c\/strong\u003e\u003cbr\u003eYes; the cable is listed as compatible with Cisco QSFP-H40G-CU5M and Meraki MA-CBL-40G-5M and is tested for vendor interoperability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the 5 m length suitable for rack-to-rack connections?\u003c\/strong\u003e\u003cbr\u003eYes, 5 m is appropriate for adjacent rack or top-of-rack to nearby switch connections, but not for longer campus runs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this cable require additional configuration?\u003c\/strong\u003e\u003cbr\u003eNo, it is plug-and-play on compatible QSFP+ ports and is shipped individually tested for immediate use.\u003c\/p\u003e","brand":"10Gtek","offers":[{"title":"Default Title","offer_id":48613266653403,"sku":"B00SIW0T9O","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61ruVWsuwcL._SL1500.jpg?v=1778426585","url":"https:\/\/gearmusthave.com\/products\/40g-qsfp-dac-cable-5-meter-reliable-40gbe-twinax-link","provider":"GearMustHave","version":"1.0","type":"link"}