This is actually a cable with SFP+ Cables, not a module with a separate cable.Notice that the cable is permanently integrated into the SFP+ ends. Because of this, both devices must present SFP+ ports. While the cables are somewhat inconvenient to work with due to the integration, CX1 modules are used due to a very low cost ($150-$200 per cable), extremely low power consumption (0.25W per cable), and a negligible latency penalty.Notice that the cable is permanently integrated into the Twinax copper cable Because of this, both devices must present SFP+ ports. While the cables are somewhat inconvenient to work with due to the integration, CX1 modules are used due to a very low cost ($150-$200 per cable), extremely low power consumption (0.25W per cable), and a negligible latency penalty. The 10GSFP+Cu link utilizes a receive equalizer in the host PHY/SerDes in order to compensatefor the Inter Symbol Interference (ISI) introduced by the cable. Electrical and mechanical specifications for SFP+ Cables optical modules, 10GSFP+Cu, and hosts are defined in the SFF-8431 specification developed by the SFF Committee, with broad industry participation. These Direct Attach copper cable assemblies were the focus of the interoperability testing.