I can recommend this one as an ac-Stick: http://www.linux-hardware-guide.com/2014-09-17-edimax-ew-7811utc-ac600-usb-wifi-dual-band-802-11ac-5ghz-802-11n-2-4ghz It doesn't work out-of-the box, but for just 20 dollars it works nice :)
I can recommend this one as an ac-Stick: www.linux- hardware- guide.com/ 2014-09- 17-edimax- ew-7811utc- ac600-usb- wifi-dual- band-802- 11ac-5ghz- 802-11n- 2-4ghz
http://
It doesn't work out-of-the box, but for just 20 dollars it works nice :)