HP Procurve 2510G-24 100/1000Mbps 24-Port Ethernet Switch ( J9279A ) NOB

HP ProCurve 2510 Series E2510-24G 20 X RJ-45 Ports 10/100/1000Base-T + 4 X Dual Personality RJ-45/SFP (Mini-GBIC) Ports Layer 2 Managed Rack-Mountable Gigabit Ethernet Network Switch. Switching capacity: 48 Gb/s.

eBay