• Compatible With IEEE 802.3af/at Compliant PDs • Extend Mode Button (Ports 1–4 and Ports 1–8, Up to 250 m PoE power supply and data transmission) • Isolation Mode Button (Ports 1–8) • PoE Auto Recovery Button (Ports 1–8) • Mac Address Auto-Learning and Auto-Aging • IEEE802.3x Flow Control For Full-Duplex Mode And Backpressure for Half-Duplex Mode