Cisco 100GBASE-CR4 QSFP28 Passive Copper Direct Attach Cable, 3 m

Three meters gives more slack than the shortest cable in the range, and that is the point of the Cisco 100GBASE-CR4 QSFP28 Passive Copper Direct Attach Cable, part number QSFP-100G-CU3M. It has QSFP28 connectors on both ends and runs at 100GbE.

This length suits connections between a server and a top-of-rack switch where the ports are not directly adjacent, or a link between neighboring racks. As a passive copper cable it has no optics inside the connectors, which keeps the part simple and avoids separate transceivers.

Measure the real cable path before you buy. Bends, cable management arms and the vertical distance between ports use up length quickly, and a cable that is too short cannot be stretched. If 3 m is not enough, a longer copper cable or a fiber-based cable is another route.

Check host support for the cable as well. Some switches and adapters accept only certain direct attach cables.

The QSFP-100G-CU3M is available new, refurbished and used. New and refurbished units carry 1 year or 3 years of warranty, and used units carry 90 days. Include the quantity and platform in your request.