CISCO Cisco - SFP (mini-GBIC) transceiver module - 1GbE - 1000Base-BX - up to 10 km - 1310 (TX) / 1490 (RX) nm - for 250 Series, Catalyst 2960, 2960G, 2960S, 3560, 3560E, 3560G, 3560V2, 3560X, ESS9300 GLC-BX-U=
CISCO Cisco - SFP (mini-GBIC) transceiver module - 1GbE - 1000Base-EX - LC/PC single-mode - up to 40 km - 1310 nm - for Catalyst ESS9300 Embedded Series GLC-EX-SMD=
CISCO Cisco - SFP (mini-GBIC) transceiver module - 100Mb LAN - 100Base-BX - LC single-mode - up to 10 km - 1310 nm - for Catalyst 2960, 2960-24, 2960-48, 2960G-24, 2960G-48, 2960S-24, 2960S-48, 3560, 3560-12 GLC-FE-100BX-U=
CISCO Cisco Rugged SFP - SFP (mini-GBIC) transceiver module - 100Mb LAN - 100Base-FX - LC multi-mode - up to 2 km - 1310 nm - for Aironet 1522, Catalyst 2960, 2960-24, 2960-48, 2960G-24, 2960G-48, 2960S-24, 2960S-48 GLC-FE-100FX-RGD=