FGSD-1022HP offers 150Watts PoE power for PoE device, so please assign it well. One IEEE 802.3at PoE device needs 30Watts and one IEEE 802.3af PoE device need 15.4Watts maximum. For example, you may connect 8 IEEE 802.3af PoE devices or 5 IEEE 802.3at PoE devices only and sure about you may mix connect them. For example, you may connect 2 IEEE 802.3at PoE devices and 5 IEEE 802.3af devices.