D-Link 52-Port Gigabit Stackable SmartPro Switch Including 4 10GbE SFP+ Ports - 52 Ports - Manageable - Gigabit Ethernet, 10 Gigabit Ethernet - 10/100/1000Base-T, 10GBase-X - 3 Layer Supported - Twisted Pair, Optical Fiber - 1U High - Rack-mountable - Lif
D-Link Systems, Inc ®