The XDACBL3M is a 3 meter (9.8 ft) SFP+ 10 GbE Direct Attach passive copper cable. The XDACBL1M SFP+ Direct Attach cables offer a highly cost-effective way to connect within racks and across adjacent racks and are fully compatible with the Intel Ethernet Converged Network Adapter X520 Family (X520 product codes: E10G42BTDA, E10G41BFSR, E10G42BFSR, E10G41BFLR).