H3C SFP-GE-LH40-SM1550-BIDI Compatible 1000Base BX BIDI SFP TX1550nm/RX1310nm 40km LC SMF DDM Transceiver Module
H3C SFP-GE-LH40-SM1550-BIDI Compatible 1000BASE-BX BIDI SFP up to 40km of 1000Base-BX throughput over SMF using 1550nm-TX/1310nm-RX wave lengths via LC simplex connector.

