Good news: It's very fast! The bad news is that it's very large and sticks out so much that I'm concerned it might get bumped and sometimes drop the Wi-Fi connection. Worse news and big problem: Despite numerous attempts over several weeks with their supposed help from technical support, he cannot update his firmware. I don't know if the problem is in the software on the TP-Link website or in the device itself. Eventually I got tired of numerous attempts, including the email with the firmware version of the installer software, which gave me prompts in Chinese (which I can't read), and sent them back to Revain. Legacy firmware has known security issues - if I can't update to the latest version, then I don't want to either. I ended up buying an Edimax AC1200 Wi-Fi adapter and it works great, very small, very fast (TP-Link has always been a bit faster), never drops connections and firmware updates with no issues!
TP-Link Archer T4U Plus AC1300 USB 3.0 WiFi Network Adapter
29 Review
High Gain Wireless Network Adapter - TP-Link Nano USB Wifi Dongle with 150Mbps Speed for PC Desktops and Laptops. Compatible with Win10/8.1/8/7/XP Linux 2.6.18-4.4.3, Mac OS 10.9-10.15 (TL-WN722N)
46 Review
Wi-Fi adapter D-link DWA-140, black
46 Review
Enhance Your WiFi Range with TP-Link TL-WPA4220KIT 300Mbps AV500 Powerline WiFi Extender Start Kit
37 Review
UGREEN USB 3.0 Ethernet Adapter Hub with RJ45: Fast Gigabit Ethernet Converter, 3 Ports USB 3.0 Hub Compatible for MacBook, iMac, Surface Pro, Chromebook, Laptop, PC
11 Review
π uni USB C Hub with Ethernet Adapter, 4K HDMI, Gigabit Ethernet, and 3 USB 3.0 Ports for MacBook Pro, iPad Pro, XPS
11 Review
π CERRXIAN RS232 to Ethernet Serial Device Server - TCP/IP Converter with 1Port DB9 RS232 Serial to Ethernet Connectivity
3 Review
HB-UMLS Sabrent USB 2.0 Hub with 4 Ports and LED Power Switches for Each Port
12 Review