Cisco - SFP (mini-GBIC) transceiver module - SONET/SDH - CWDM - LC single-mode - up to 74.6 miles - OC-3/STM-1 - 1510 nm - refurbished - for P/N: 15454-MRC-I-12, 15454-MRC-I-12=
An SFP transceiver module is a bidirectional device with a transmitter and receiver in the same physical package. The module interfaces to the network through a connector interface on the electrical ports and through an LC termination connector on the optical ports.