XENPAK-10G-LR is single mode Cisco fiber optic transceiver for 10G Ethernet and its max working distance is 10km over common single mode G 652 optical fiber. XENPAK-10G-LR use duplex SC fiber optic interface to connect the network, the other end of the XENPAK-10G-LR transceiver will fit into the relevant slot or port on the switch or routers. XENPAK-10G-LR typical working wavelength is at 1310nm. We supply Cisco equivalent XENPAK-10G-LR fiber optic transceiver at good price and fast delivery.