The GBS-GLX40 is a high performance 1310nm single-mode GBIC transceiver supporting full duplex, gigabit speeds on single-mode fiber for distances of up to 30km on 9ìm. This hot pluggable unit has a metal housing to reduce EMI and to increase durability. The GBS-GLX40, 1000BaseLHX interface fully complies with the IEEE 802.3z 1000BaseLX standard. However, the higher optical quality allows them to reach 40 km over single-mode fiber (SMF) versus the 5 km specified in the standard. 1310nm Single-mode Transceiver Duplex SC Connector Metal Enclosure Reduces EMI 3.3V Power Supply Hot Pluggable Multi-Vendor Device Support Up to 40km on 9/125µ Up To 1.25Gbps Bi-Directional (Gigabit) Up To 1.0625Gbps Bi-Directional (Fiber Channel).