2.4 GHz frequency band (802.11n, compatible with 802.11b/g): max. 3 free channels
5 GHz frequency band (802.11n, compatible with 802.11a): up to 23 free channels, robust and interference-free connections (no interference from cordless telephones, BlueTooth, microwaves etc.)
DAP-1522: dual-band access point, 2.4 GHz or 5 GHz, WLAN modes: access point/bridge
DAP-2553/DAP-2590: dual-band access point, 2.4 GHz or 5 GHz, WLAN modes: access point/bridge/client
DAP-2690: dual-band access point, parallel operation at 2.4 GHz and 5 GHz, WLAN modes: access point/bridge/client
DIR-815/DIR-825: dual-band router, parallel operation at 2.4 GHz and 5 GHz