Cisco - SFP (mini-GBIC) transceiver module

1GbE - 1000Base-BX - up to 10 km - 1490 (TX) / 1310 (RX) nm - for Catalyst 2960, 2960G, 2960S, 3560, 3560E, 3560G, 3560V2, 3560X, ESS9300