Cisco QSFP-100G-CU5M= 100GBASE-CR4 Passive Copper Cable, 5 m | QSFP28

Keep high-speed links short, direct, and predictable with Cisco’s 100GBASE-CR4 passive copper cable. At 5 m, the QSFP-100G-CU5M= is suited to adjacent rack connections where optical transceivers are unnecessary and passive copper provides a simpler path between compatible QSFP28 ports. This cable is a strong fit for dense data center layouts that prioritize signal path simplicity, lower component count, and straightforward deployment. It helps reduce the need for separate optics on short runs while preserving the physical discipline required in high-density switching environments. For teams standardizing on Cisco infrastructure, it offers a clean match to supported 100 GbE copper interconnect use cases. Choose this cable when you want a direct 100G link for short distances without adding complexity to the bill of materials. It is well suited to rack-to-rack or intra-row connections where passive copper is the right technical and economic choice.