ganske sikker
Question: What is Dual Band Wireless Networking?
Answer: In Wi-Fi wireless networking, dual band is the capability to transmit on the 5 GHz band of 802.11a and also the 2.4 GHz band used by 802.11b, 802.11g, and 802.11n. Unlike ordinary Wi-Fi equipment that only supports one signal band, dual-band gear contain two different types of wireless radios that can support connections on both 2.4 GHz and 5 GHz links.
Har selv en Dir-655 der kan kører G og N, den er heller ikke en dual band