Cisco Compatible GLC-BX-U-40K - Functionally Identical 1000BASE-BX-U SFP Bi-Di Tx1310nm/Rx1490nm 40km Simplex LC ConnectorEnhance your Cisco network with a highquality, OEMcompatible GLC BX U 40K SFP transceiver from ENET. This module is functionally identical to Ciscos GLC BX U, delivering dependable 1 Gbps fiber connectivity over a single fiber strand using BiDi technology. With a long reach of up to 40 kilometers and an LC simplex connector, its designed for enterprise, data center, and campus environments where performance, compatibility, and costefficiency matter.