QSFP-4SFP10-CU0-5

Cisco 40GBASE-CR4 QSFP to 4 10GBASE-CU SFP+ direct-attach breakout cable, 1/2-meter, passive

The Cisco QSFP-4SFP10-CU0-5 is a passive copper breakout cable to connect 40G QSFP ports to four 10G SFP+ ports over 0.5m reaches.