QSFP-H40G-CU50CM
Cisco Compliant 40GBASE-CR4 QSFP+ direct-attach copper cable, 0.5 meter, passive

Protocol: 40G Ethernet
Form factor: QSFP+
Length: 0.5 meter
Temperature Range: -20 to 85 °C
RoHS compliant: Yes
Fully Cisco Compatible: Yes

Cisco QSFP+ to QSFP+ copper direct-attach 40GBASE-CR4 cables are suitable for very short distances and offer a highly cost-effective way to establish a 40-Gigabit link between QSFP+ ports of Cisco switches within racks and across adjacent racks.