Allied Telesis AT SPBD20-13/I

SFP (mini-GBIC) transceiver module - 1GbE - 1000Base-BiDi - up to 20 km - 1310 (RX) / 1550 (TX) nm - for AT x240; CentreCOM AT-GS970EMX/52, x230-18; CentreCOM SE240 Series