IBM 1Gbps 1000Base-T 100m RJ-45 Connector SFP Transceiver Module. The IBM SFP 1000Base-T Transceiver module is a 1000Base-T small-form-factor, hot-pluggable (SFP) transceiver that plugs into an SFP SERDES data port, and is compatible with 1000Base-X auto-negotiation.