XFP modules are 10-gigabit modules that convert serial electrical signals to external serial optical or electrical signals. XFP modules can be installed or replaced in an Extreme Networks switch or I/O module without powering off the system. Extreme Networks XFP modules comply with IEEE 802.3ae standards and XFP multi-source agreement (MSA).The ER XFP module uses SMF cable for links up to 40 km long. It has an LC duplex connector.