D-Link DBS-2000 52 Port Ethernet Switch - 2 Layer Supported Optical Fiber,

Subtype Gigabit Ethernet. Power Over Ethernet (PoE) PoE+. Brocade 320 Switch 16 LAN + 8 x 4Gb Fibre Channel Switch HD-320-0004-M. Device Type Switch - 52 ports. Trendnet TPE-4840WS Managed network Switch Gigabit Ethernet.

eBay