The Cisco QSFP-4SFP10-CU0.5 is a direct attach breakout cable manufactured by Cisco. It features a 0.5-meter form factor with one QSFP connector on one end and four SFP+ connectors on the other, supporting data transmission speeds up to 40 Gbps.
This passive twinax copper cable enables high-speed connections between a single 40-Gigabit port and four separate 10-Gigabit ports within short distances, such as in-rack or adjacent rack deployments. Designed for use with compatible Cisco switches and transceivers that support QSFP-to-SFP+ breakouts.
Cisco QSFP-4SFP10-CU0-5: Cisco 40GBASE-CR4 QSFP to 4 10GBASE-CU SFP+ direct-attach breakout cable, 1/2-meter, passive