SFP-H25G-CU3M=

The SFP-H25G-CU3M is a passive copper cable for 25 Gigabit Ethernet, 3 m long, with an SFP28 connector on each end. It spans a full rack and typically the adjacent rack as well, with room for a tidy loop in the vertical cable manager. The host port must use BASE-R (FC-FEC) forward error correction at this length. Neat hook-and-loop strapping helps keep front-to-back airflow clear around the switch faceplate. It joins SFP28 ports directly, can carry FCoE with suitable host software, and has no active parts or diagnostics. Route it clear of power cords and fan exhaust where possible, to keep the cable run tidy and serviceable. Check the host platform's supported-cable list before deploying, as support varies by switch family and software release. Cisco's 25GBASE SFP28 data sheet lists it as a 25GBASE-CR1 direct-attach cable. Both connector ends use the same housing style, so the cable has no preferred direction when installed.