The Vigor Switch G1240 is a high-performance Gigabit Ethernet switch. It provides extensive facilities for maximising your LAN performance & also increasing security, including VLAN groups (port or tag based) as well as Qo S prioritisation & traffic/bandwidth control. The G1240 is also compact, only 170mm deep, ideal for a crowded comms cabinet (it's a standard 19" rack in width). Rack mounting brackets are included or the unit can be used on a desk/shelf. The G1240 has four SFP (Fibre Module) ports. In comparison to 'copper' (RJ45), using fibre for uplinks provides longer range & resilience from electrical interference. Each of the four ports can be used instead of the corresponding copper port (Ports 21, 22, 23 & 24). The SFP port provides compatibility with your choice of SFP module & therefore the most appropriate fibre technology for your application.