StarTech.com 0.5m QSFP+ to QSFP+ Direct Attach Cable for Juniper EX-QSFP-40GE-DAC-50CM - 40GbE - QSFP+ Copper DAC 40 Gbps - Cable for Network Device, Rack Server, Switch - First End: 1 x QSFP+ Network - Male - Second End: 1 x QSFP+ Network - Male - 40 Gbit/s - 30 AWG - Black