The gold-plated phosphor bronze contacts carry a Cat3 rating, which means this jack is specified for voice and 10BASE-T Ethernet signaling — not for the higher frequency demands of Cat5e or Cat6. The board guide prevents the connector from shifting during reflow or wave soldering.
Through-hole solder termination — the eight signal pins plus the shield tabs pass through the PCB and are wave or hand soldered. The single-row, single-port layout simplifies PCB routing — the eight contacts are arranged in a single row, and the shield ground connects through dedicated through-hole tabs that should tie to the chassis ground plane on the board. The yellow-green LED has its own through-hole leads; verify the LED pinout against your PCB layout before committing the BOM.