The 1000BASE-BX-U 10km TX1310nm/RX1490nm Simplex LC/UPC BiDi SFP Optical Transceiver Module is a high-quality, hot-pluggable SFP transceiver designed for Gigabit Ethernet single-fiber bidirectional communication. Operating at 1310 nm for transmission (TX) and 1490 nm for reception (RX), this module enables full-duplex data transmission over a single strand of singlemode fiber (SMF) up to 10 kilometers.