Ubiquiti Networks Bi-Directional Single-Mode LC SFP Transceiver Kit (2-Pack) Simplex LC Connector, Up to 1.25 Gb/s Throughput, 1310 nm TX / 1550 nm RX (Blue), 1550 nm TX / 1310 nm RX (Yellow), LC Connectors, Single-Mode Fiber, Up to 1.9 Mile Range...