Actually, a great device, the Wi-Fi function properly, you can set a lot of things, such as access control for individual devices, etc. Unfortunately, the device does not provide channels through channel 46 to select, so the Archer 9 is only partially as a wireless AP in the 5 GHz range used. Especially halfway populated areas. So if you want to resort to the 5GHz band because there are already too many WLANs, is not happy with this AP.
With a heavy heart he went back again.
PS: Unfortunately, there is also a time control for WLAN.
In the end I am again landed at the Fritz box, albeit more expensive, more here me is on offer for the money.