AirPort Extreme

Wireless protocols - IEEE 802.11a/b/g/n2 Frequency bands - 2.4GHz and 5GHz simultaneously Radio output power
- 20 dBm (nominal)
Compatibility
- Interoperable with Wi-Fi Certified 802.11a, 802.11b, 802.11g, or
802.11n enabled Mac computers, iPhone, iPod touch, and Windows-based PCs
- NAT, DHCP, PPPoE, VPN Passthrough (IPSec, PPTP, and L2TP), DNS Proxy,
SNMP, IPv6 (6to4 and manual tunnels)