I am searching for a WLAN USB adaptor that can be used as an Access Point as well as a mere client and in an AdHoc setup. It should support IEEE 802.11n and transmit rather fast (300Mbps).
As I compile custom kernels for my machines, the driver should come as part of the current kernel (3.7.1 at the time of writing) and does not need to be built externally. If possible, I would even like to avoid installing external firmware. Driver and hardware should support power saving mode.
Currently, I am using the AVM Fritz Wlan Stick N which has nearly all the features but under load crashes every few minutes and has to be restarted. So stability is also a requirement.
Does such a wondrous device exist?