SFP-H25G-CU4M — SFP28 25 Gbps

The Cisco SFP-H25G-CU4M is a pre-terminated SFP28 25 Gbps DAC cable measuring 4 m, designed for passive direct connections between 25G equipment in datacenter environments (0 to 70 °C). Without optical components, this integrated-connector cable reduces latency and power consumption compared to an active SFP28 module paired with a fiber cable.

Primary use case: rack-to-rack or ToR interconnections between 25G servers and Leaf switches in modern Spine-Leaf architectures. Its 4 m length suits configurations where equipment is in adjacent racks. Compared to the 2.5 m variant, it provides a useful extra margin for cable management. Genuine Cisco hardware, manufacturer warranty.