D-Link 52-Port Layer 3 Stackable Managed Gigabit Switch including 4 10GbE Ports - 48 Ports - Manageable - Gigabit Ethernet, 10 Gigabit Ethernet - 10/100/1000Base-TX, 10GBase-LR, 10GBase-SR, 1000Base-SX, 1000Base-LX - 3 Layer Supported - Modular - 4 SFP Sl
D-Link Systems, Inc ®