40GbE QSFP+ to 4 SFP+ Breakout Twinax Cable, QSFP-4SFP10G-CU1M Direct Attach Copper Cable, 30AWG Copper PVC Jacket 1m Cable, Zinc Alloy Shell; | Used in 10G/40Gigabit Ethernet, InfiniBand SDR, DDR, QDR, Switches, Routers, and HBAs,Data Centers; | Comaptible with Arista Networking, Ubiquiti, D-Link, Juniper, Huawei, Mellanox, Compatiable for Mikrotik and Supermicro; | In Wiitek's Signal Integrity Lab, we 100% passed TDR & VNA tested. And each DAC Cable is individually tested on switches before delivery. | Dust Cap Cover and Antistatic Bag Packaging, RoHs,CE,FCC Certificated, 3 Years Product Quality Assurance and Lifelong Technical Support.