Amer Networks unmanaged 5 port 10/100/1000Mbps. Auto-Negotiation RJ45 ports supporting auto-MDI/MDIX. Complies with the IEEE 802.3 10Base-T Ethernet, IEEE802.3u and IEEE802.3ab standards. Supports IEEE 802.3x standard flow control for full duplex, optional back pressure function for half-duplex operation. Desktop plastic case LED indicators include monitoring power, link/act LED indicators. Supports MAC address auto-learning and auto-aging. External power supply.