 This implementation of 802.11 Draft-N can operate in both the 2.4 GHz and 5 GHz ISM bands, and has modes that make it compatible with 802.11b/g and 802.11a.The number of Ethernet ports was increased to four—one nominally for WAN, three for LAN, but all can be used in bridged mode.A USB port was included for printers and other USB devices.