The industry-standard Cisco Small Form-Factor Pluggable (SFP) transceiver modules are hot-swappable input/output (I/O) devices that plug into 100BASE, 1000BASE and 10GBASE ports (for SFP+), which connect the module port with the fiber-optic or copper network. The 1000BASE-LX/LH SFP transceiver module for SMF, compatible with the IEEE 802.3z 1000BASE-LX standard, operates on standard singlemode fiber-optic link spans of up to 10 km and up to 550 m on any multimode fibers. When used over legacy multimode fiber type, the transmitter should be coupled through a mode conditioning patch cable. Hot-swappable form factor for added reliability and dependability For transmitting data at gigabit speed over hundreds of miles with little integrity loss, single-mode fiber optic is an ideal solution With 1000Base-LX/LH technology, enjoy up to 1000Mbps data transfer rate over optical fiber cable Gigabit Ethernet port for ultra-fast network speeds Optical Fiber media support for a dependable and productive connectivity SFP (mini-GBIC) with data networking application/usage for maximum dependability and convenience SFP (mini-GBIC) offers enhanced dependability with maximum productivity