The Cisco® 10GBASE X2 modules offer customers a wide variety of 10 Gigabit Ethernet connectivity options for data center, enterprise wiring closet, and service provider transport applications. Main features of Cisco 10GBASE X2 modules include: - Support 10GBASE Ethernet. - Hot-swappable input/output device plugs into an Ethernet X2 port of a Cisco switch or router to link the port with the network. - Provides flexibility of interface choice. - Supports "pay-as-you-populate" model. - 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, 10GBASE XFP and 10GBASE SFP+ modules on the same link. Cisco X2-10GB-LRM 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.