Zyxel XGS1930-52HP 24-port GbE L3 smart managed POE Switch with 4SFP + Uplink, Layer 3, Total port count: 52, 100/1000 Mbps POE X 48, Gigabit Combo (RJ-45/SFP) X 4,Switching capacity 172 GBPS, Forwarding rate 130.9 MPPS.