Cisco GLC-LH-SMD 1000BaseLX/LH SFP Gigabit Ethernet Transceiver Module - Compatible ProCurve Gigabit-LX-LC Mini-GBIC is a small form factor pluggable (SFP) gigabit LX transceiver that provides a full-duplex gigabit solution up to 10 km (singlemode) or 550 m (multimode)