Approved GLC-BX-U - 1000Base BX-U, 10 Km, TX: 1310 nm, RX: 1490 nm SFP transceiver. 100% Cisco compatible.
TECH DATA GLC-BX-D= Cisco - SFP (mini-GBIC) transceiver module - 1000Base-BX - plug-in module - up to 6.2 miles - 1490 (TX) / 1310 (RX) nm - for Cat
Cisco - SFP (mini-GBIC) transceiver module - 1000Base-BX - plug-in module - up to 6.2 miles - 1310 (TX) / 1490 (RX) nm - for Cat