C2G/Cables to Go 39507 Cisco  GLC-LH-SM Compatible 1000Base-LX SMF SFP (mini-GBIC) Transceiver Module Manufacturer - C2G Data_Transfer_Rate - 1 Gbps Gigabit Ethernet Application/usage - Optical Network Manufacturer_Part_Number - 39507 This SFP (mini-GBIC) transceiver module is designed for use with Cisco network equipment and is equivalent to Cisco part number GLC-LH-SM. The transceiver is hot-swappable input/output device which allows a Gigabit Ethernet port to link with a fiber optic network. OEM specific configuration data is loaded on to the EEPROM of the transceiver at the factory, allowing this transceiver to initialize and perform identically to an OEM transceiver. This transceiver may be mixed and deployed with other OEM or third party transceivers and will deliver seamless network performance.