This SFP module covers most Gigabit Ethernet fiber optic applications for single strand, single mode fiber 9/125um on distances up to 20Km, using Tx:1550nm/Rx:1310nm. Transceiver has a single LC connector and must be matched with an A type to operate properly. The optical module has been tested and found compatible with various Ethernet switches from major manufacturers like: Cisco, Nortel, Extreme, ZyXEL, D-Link or Netgear. All ROBOfiber transceivers support DDM (Digital Diagnostic) features.