The Intel Ethernet SFP+ LR ( Long Range - Max link distance is 10km) Optic is a SFP+ module designed for the Intel Ethernet Converged Network Adapters (X520 family: product codes: E10G43BTDA, E10G41BFSR, E10G42BFSR, E10G41BFLR). This lead free optic module supports rates selectable 1.25 Gb/s to 10.3 Gb/s bit rates.
Intel Ethernet Converged Network Adapters:
Intel warrants to the original owner that the adapter product delivered in this package will be free from defects in material and workmanship. This warranty does not cover the adapter product if it is damaged in the process of being installed or improperly used. For more warranty information follow this link: http://www.intel.com/support/network/sb/cs-009721.htm