D-Link DGS-1210-52MP 52 Ports Manageable Ethernet Switch. Overview D-Link DGS-1210-52MP 52 Ports Manageable Ethernet Switch - 48 x POE - 48 x RJ-45 - 4 x Expansion Slots - 10/100/1000Base-T, 1000Base-X - Desktop, Rack-mountable.
eBay