10Gtek 40G QSFP+ DAC Cable - 40GBASE-CR4 Passive Direct Attach Copper Twinax QSFP Cable for Cisco QSFP-H40G-CU1M, Meraki MA-CBL-40G-1M, Supermicro, Mikrotik, Open Switch Devices, 1-Meter(3.3ft)