You've got Cat 5e running to the desk, but the switch port is SFP. The TL-SM331T bridges that gap. Drop it in, plug your RJ45 cable in, and you've got 1000BASE-T over up to 100m of Cat 5e or better. Hot-pluggable — pull it out, swap it, no reboot. Fully metallic enclosure keeps EMI down in a crowded rack. 0.5W typical draw, so it won't warm up your patch panel. Compliant with IEEE 802.3-2002. Runs 0 to 70°C. One module, one cable, problem gone
| brand | TP-LINK |
| model | TL-SM331T |
| type | SFP Module |
| standard | 1000BASE-T |
| max_cable_length | 100m (Cat 5e or above) |
| data_rate | 1.25 Gbps |
| port_type | 1× 1000 Mbps RJ45 |
| hot_swappable | Yes |
| tx_disable | Yes |
| power_supply | 3.3V |
| operating_temperature | 0–70°C (32–158°F) |
| storage_temperature | -40–85°C (-40–185°F) |
| certifications | FCC, CE |
