Asus USB-AC53 AC1200 Dual Band Wireless USB Adapter, AC speed to 867 Mbit / s at 5 GHz, USB 2.0, WPS, 2 internal antennas (Personal Computers)
The WLAN stick I use along with a AC66U to the maximum speed of my wireless elicit. The speed convinced at 2 receiver lines n in WLAN + ac I still reach full internet speed of 12.5-13.5 mb / s (Cable 100 Mbit / s, with Lankabel I reach not much more)