The Cisco 10GBASE-LRM Module supports link lengths of 220m on standard Fiber Distributed Data Interface (FDDI) grade multimode fiber (MMF). To ensure that specifications are met over FDDI-grade, OM1 and OM2 fibers, the transmitter should be coupled through a mode conditioning patch cord. No mode conditioning patch cord is required for applications over OM3. The Cisco 10GBASE-LRM Module also supports link lengths of 300m on standard single-mode fiber (SMF, G.652). Wavelength: 1310-nm, Supports the Cisco quality identification (ID) feature that enables a Cisco switch or router to identify whether the module is certified and tested by Cisco, Has optical interoperability with respective 10GBASE Xenpak and 10GBASE XFP modules on the same link Product Name: 10GBASE-LRM X2 Module Product Type: X2 Compatibility: Catalyst 6500 series Routers, Catalyst 4500 Series Routers, Catalyst 4900 Series Routers Product Model: X2-10GB-LRM Application/Usage: Optical Network Interfaces/Ports: 1 x 10GBase-LRM Interfaces/Ports Details: 1 x SC Duplex 10GBase-LRM Network Form Factor: Hot-swappable Data Transfer Rate: 10 Gbps Gigabit Ethernet Connectivity Media: Multi-mode Optical Fiber 10GBase-LRM Interface Type: 10GBase-LRM Number of Ports/Channels: 1