Cisco 25GBASE-CR1 SFP28 Passive Copper Direct Attach Cable, 1 m

For two devices sitting side by side, the Cisco 25GBASE-CR1 SFP28 Passive Copper Direct Attach Cable, part number SFP-H25G-CU1M, is the compact solution. It is 1 m long, has SFP28 connectors on both ends and runs at 25GbE over passive copper.

The typical use is a server adapter linked to a switch in the same rack with little distance between ports. Passive copper has no optics inside the connectors, so it is a simple, low-cost way to build a short 25GbE link, and there are no transceivers to stock.

Length is the constraint. One meter leaves little room for routing around cable management, so measure from port to port along the real path before you order. For longer runs, the same family has other lengths with their own part numbers.

Check that both ends accept the cable. Some adapters and switches are particular about which direct attach cables they allow, and the host documentation lists supported options.

The SFP-H25G-CU1M is available new, refurbished and used. New and refurbished cables carry 1 year or 3 years of warranty, and used cables carry 90 days. Include the quantity and host platforms in your request.