Trendnet'S 28-Port Gigabit Web Smart Poe+ Switch, Model Tpe-2840Ws, Offers 4 X Gigabit Poe+ Ports (Ports 1-4 802.3At), 20 X Gigabit Poe Ports (Ports 5-24 802.3Af), 4 X Sfp Slots, And A Poe Power Budget Of 185 Watts. This Ipv6 Ready Switch Offers Advanced Traffic Management, Troubleshooting, Access Control, Energy Saving Greennet, And Monitoring Features At A Reduced Cost.