Brainboxes 1 SFP & 4 Port Gigabit Ethernet Switch - 4 Ports - Gigabit Ethernet - 10/100/1000Base-T, 1000Base-X - 2 Layer Supported - Modular - 1 SFP Slots - 3.60 W Power Consumption - Twisted Pair, Optical Fiber - DIN Rail Mountable, Compact - Lifetime Limited Warranty: