The QSFPH40GCU3M is a Cisco QSFP-H40G-CU3M compatible direct-attach copper QSFP+ cable that's designed, programmed and tested to work with Cisco® brand compatible switches and routers and complies with MSA industry standards. This passive Twinax copper cable supports 40 Gigabit Ethernet applications connected through QSFP+ (Mini-GBIC) ports. This copper QSFP+ cable is hot-swappable, making upgrades and replacements seamless by minimizing network disruptions. Designed for high-speed performance, this low-power, low-latency QSFP+ cable is a cost-effective alternative to fiber-optic cable assemblies, supporting short-distance applications such as point-to-point in-rack network switch or server connections. StarTech.com SFP Cables All StarTech.com SFP & SFP+ cables are backed by a lifetime warranty and free lifetime multilingual technical support. StarTech.com offers a wide variety of direct-attach SFP cables and SFP modules, providing the convenience and reliability you need to ensure dependable network performance. More from the Manufacturer

• 100% CISCO QSFP-H40G-CU3M COMPATIBLE: Works with Cisco switches like C9300, C9200, C9400, C9500, C9600 and others
• TECHNICAL SPECS: 3m (9.8ft) | 40 Gbps | Passive Twinax (Copper) | 2x QSFP+ Pluggable Connector | 100 Ohm Impedance | 30 AWG Wire Gauge | PVC Cable Jacket | Hot swappable | MSA Compliant
• TESTED FOR OEM HOST COMPATIBILITY: Hot-swappable in Cisco routers and switches
• OUTSTANDING SUPPORT: Backed by StarTech.com for the life of the cable itself, not your equipment; our cables won't void your OEM support and with access to our Tech Advisors 5/24.
• Hot-swappable
• WORKS WITH MSA COMPLIANT SWITCHES: Low power 40GbE DAC also works with switch models from Ubiquiti, D-Link, Netgear, Supermicro, TP-Link and more that accept uncoded modules and transceivers