AirPort Extreme 802.11n (5th Generation) Wi-Fi router/access point. Technical info:

Wireless protocols IEEE 802.11a/b/g/n
Frequency bands 2.4GHz and 5GHz simultaneously
Interoperable with Wi-Fi Certified 802.11a, 802.11b, 802.11g, or 802.11n enabled Mac computers, iPad, iPhone, iPod touch, and Windows-based PCs
NAT, DHCP, PPPoE, VPN Passthrough (IPSec, PPTP, and L2TP), DNS Proxy, SNMP, IPv6 (6to4 and manual tunnels)
One Gigabit Ethernet WAN port for connecting a DSL or cable modem
Three Gigabit Ethernet LAN ports for connecting computers or network devices
USB 2.0 port for connecting a USB printer or USB external hard drive
802.11n wireless

More info on Apple's support website (search 112440).

AirPort Extreme 802.11n (5th Generation) (Goldenacre EH5)