GLC-SX-MM-RGD= Cisco Rugged SFP (Mini-GBIC) Transceiver Module

The industry-standard Cisco Rugged SFP (Mini-GBIC) Transceiver Module is a hot-swappable input/output device that plugs into a Gigabit Ethernet port or slot, linking the port with the network. SFP can be used and interchanged on a wide variety of Cisco products.