1x9 dual SC and ST transceiver modules are specifically designed for the high performance integrated duplex datalink over multi-mode or single-mode optical fiber. These transceiver modules are compliant with the DSC Multi-source Agreement (MSA). The applications include: (for 1.25Gbps) 1xFibre Channel, Gigabit Ethernet, and High speed I/O for file server. (for 155Mbps) ATM switches and routers, Fast Ethernet, and FDDI.