Cisco SFP-50G-CU4M 25/50GBASE-CU SFP56 Cable 4 m LSZH | DAC, 50G — SFP-50G-CU4M

Keep short-reach interconnects simple, predictable, and cost-efficient with Cisco’s 25/50GBASE-CU SFP56 cable. Built for 25G and 50G copper links, this 4-meter passive direct-attach cable is designed for dense rack and adjacent-rack deployments where optical transceivers are unnecessary overhead. The LSZH jacket supports installations in enclosed spaces and data center pathways where reduced smoke emission is preferred. For teams standardizing on SFP56-based connectivity, this cable provides a clean path for high-bandwidth links between switches, servers, and storage nodes without adding transceiver complexity. At 4 meters, it fits the practical distances that matter in modern racks: top-of-rack to server, adjacent cabinet to cabinet, and tightly planned aggregation layouts. It is a straightforward choice when you want dependable short-run connectivity, lower power draw than optical alternatives, and fewer components to source, track, and replace. For infrastructure teams, that simplicity translates into faster deployment and fewer points of failure. Ideal For Connect top-of-rack switches to nearby servers in a single cabinet Link adjacent network racks where 4 meters covers the cable path Attach storage or compute nodes to 25G or 50G switching fabrics Standardize short-reach interconnects in dense data center rows Why This Product 1 Passive copper design avoids the cost and power of optical transceivers 2 4 meter length suits adjacent-rack and in-rack deployments 3 LSZH jacket is better suited to enclosed data center pathways 4 Built for 25G and 50G SFP56 short-reach connectivity