As a manufacturer of Direct Attach Copper Cable, Fayevan offers custom services to meet your specific network requirements. Trust us to provide the connectivity solutions you need for your business. Rest assured that our cable has passed rigorous TDR & VNA testing in our Signal Integrity Lab, ensuring that you get the best possible signal integrity for your network. Compatible with Cisco QSFP-100G-CU3M and is individually tested on switches before delivery for superior performance, quality, and reliability. QSFP28 100GBASE-CR4 DAC Direct Attach Copper Twinax Cable, Passive, 3-Meter(10ft), 30AWG.