TP-Link Archer T4U AC1200 Dual Band Wireless LAN Adaptor (802.11ac / b / g / n WiFi standard, 300Mbps at 2.4GHz and 5GHz 900Mbps on frequency, USB 3.0) (Accessories)
Absolutely a good product! The Ersteinrichting went smoothly, the WLAN USB Stick has been docked at the computer with Windows 8.1 Pro, the repeater has been coupled with the Fritz box 7490 and 2.4 GHz and 5 GHz were within 2-3 minutes for each device