Cisco (SG300-52P-K9-NA) 52-Port Gigabit PoE Managed Switch 48 x 10BASE-T/100BASE, TX/1000BASE-T, RJ-45 - 2xPOE, 10BASE-T/100BASE-TX/1000BASE-T RJ-45; 1 x console - 9 pin D-Sub, (DB-9) - management; 2 x SFP (mini-GBIC) 52 Ports (L3 Managed) Switching capacity: 104 Gbps, Forwarding performance (64-byte packet size) 77.38 Mpps, 1x Serial Cable 16MB Flash Memory, 128MB RAM, Internal Power Supply, 4K Active VLANs, Desktop, Rack Mountable POE (Power Over Ethernet) MTBF: 100,262 hours at 45C, Voltage required: AC 120/230 V ( 50/60 Hz)