I just got the internal adapter Intel Wireless Dual Band AC 7260. I couldn't get it to work at ac speed, it always connects at 54mbps. I have another usb external DLink AC wireless adapter which works fine.
Just wondering if I have to do anything (config/setup) with the Intel internal wireless adapter to make it work at ac speed. I have been to device manager and check but it doesn't seem to have any option for ac mode.