This product is an unmanaged Giga Ethernet PoE switch with 4 Giga PoE ports and 1 Giga RJ45 Uplink. The Step-Link feature incorporates power management features to prioritize PoE ports when the total power output of the PoE ports exceeds the maximum PoE power budget, shutting down lower-priority ports and providing power to critical PD devices to extend the service life of the switch.