Hewlett Packard Enterprise X122 1G SFP LC BX-D Transceiver 1000Mbit/s SFP 1490nm Single-mode network transceiver module

X122 1G SFP LC BX-D Transceiver SFP Gigabit-BX A small form-factor pluggable (SFP) Gigabit-BX (bi-directional) "downstream" transceiver that provides a full-duplex Gigabit solution up to 10 km on one strand of single-mode fiber. The J9142B connects to the J9143B "upstream" transceiver, or to any IEEE-standard 1000BASE-BX10-U ("upstream") device.