The Intel Ethernet SFP+ SR (Short Range - Max link distance is 300 m) Optic is a SFP+ module designed for the Intel Ethernet Converged Network Adapters (X520 family: product codes: E10G42BTDA, E10G41BFSR, E10G42BFSR, E10G41BFLR). This lead free optic module supports rates selectable 1. 25 Gb/s to 10. 3 Gb/s bit rates. Intel Ethernet - It just works! Please note: server components such as memory and power supplies must match those already installed in a server. To avoid compatibility clashes or for advice, please contact us on solutions@ebuyer. com.