Extreme networks 45110 network switch module

4 x MT-RJ 1000Base-SX LAN <b>Alpine 3800 4-port 1000BASE-SX Module</b>
As standardized by IEEE 802.3, Gigabit Ethernet is currently being used throughout metro and enterprise networks. This Gigabit Ethernet module is based on the Extreme Networks "i"-series chipset allowing them to support advanced high performance features.