TP-Link SM331T 1000BASE-T RJ45 SFP Module

Overview

The SM331T is a hot-swappable 1000BASE-T copper transceiver designed for TP-Link Omada managed switches with SFP slots. It enables gigabit Ethernet connectivity over standard copper cabling (Cat5e or better) up to 100 meters — solving the common integration challenge of extending managed switch capacity to distant equipment racks, PoE injectors, or intermediate network aggregation points without requiring fiber optics or additional copper switch ports. Install this module into any compatible SFP slot and connect via standard RJ-45 cabling; no configuration required.

Compatibility

The SM331T works with TP-Link Omada switches featuring SFP mini-GBIC slots — verify your switch model supports 1000BASE-T copper SFP modules before ordering. It is not compatible with fiber-optic SFP modules, fixed-port switches without SFP expansion capability, or non-Omada switches from other manufacturers. If you are deploying a larger managed switch infrastructure, confirm that your switch firmware supports hot-swappable module detection and auto-negotiation with copper SFP transceiver types.

Specifications

Speed: 1000 Mbps (gigabit) — matches the throughput capacity of modern managed switches feeding security systems, access control panels, or warehouse automation devices.

Interface: RJ-45 connector; operates on Cat5e, Cat6, or Cat6A cabling.

Distance: Up to 100 meters on Cat5e or above — adequate for extending uplink or downlink connections across a facility without intermediate hubs.

Form Factor: Hot-swappable mini-GBIC SFP module — install or replace without powering down the switch.

Power: Draws power from the SFP slot itself; no separate power supply required.

Integration Notes

Use this transceiver to expand SFP slot utilization without dedicated fiber runs. For PoE-dependent security cameras or access control devices, pair this module with PoE-capable Omada switches to preserve power delivery across the copper link. Verify cable runs do not exceed 100 meters and use certified cabling to maintain gigabit performance. No firmware update or driver installation is required — insert the module and allow auto-negotiation to complete (typically 10–30 seconds).