The MGX-1GE is a single-port high-speed uplink (Gigabit Ethernet) back card. The MGX-1GE is installed in the upper rear bay back slot directly behind the RPM-XF. The MGX-1GE uses SFP transceivers that support Gigabit Ethernet rates on a SX, LH/LX, and ZX Gigabit Ethernet interface types. The transceivers can be changed or upgraded.