Cisco 25GBASE-CR SFP28 Passive Twinax Direct Attach Cable, 3 m

Three meters of passive twinax copper with SFP28 connectors at both ends is the offer of the Cisco 25GBASE-CR SFP28 Passive Twinax Direct Attach Cable, part number SFP-H25G-CU3M. It runs at 25GbE and uses no optics.

This length sits between the shortest and the longest copper cables in the family. It reaches from a server to a top-of-rack switch with some room for routing, and it can bridge neighboring racks when they are close together.

Because the cable is passive twinax, it is thicker and less flexible than an optical cable, and the route needs space. Measure the path from port to port along the real cable management, because a cable that is a little too short cannot be used, and extra length gets bundled.

Host support is the other check. Some adapters and switches accept only specific direct attach cables, and the platform documentation lists which. For 25GbE, the host may also need to apply error correction suited to the cable, which many devices do automatically.

The SFP-H25G-CU3M is offered in new, refurbished and used condition. New and refurbished cables carry 1 year or 3 years of warranty, and used cables carry 90 days. Send your quantity and platforms with the request.