USED • 3TB for Time Machine Backup • Simultaneous Dual-Band 802.11ac Wi-Fi • 802.11a/b/g/n Wi-Fi Compatible • WPA/WPA2 Encryption, NAT Firewall • 1 x USB 2.0 Port • 3 x Gigabit Ethernet LAN Ports • 1 x Gigabit Ethernet WAN Port • Built-In Power Supply