Bests & Worsts Reviews from Amazon

Forget the brand name, this is a Realtek RTL8811AU Wireless LAN USB Network Adapter (or at least mine is). Out of the box and connected to my Windows 10 laptop or PC to my 150 Mbps Broadband, I got the same results: as expected upload speed but incredibly slow (2.5 to 3.7 Mbps) download speed on both bands. Attempting to install the drivers from the disk resulted in a message that I had the latest drivers already installed. Before giving up, I went to the Realtek.com website, then selected “Downloads” (top line) and then navigated through “Communications Network ICs, Wireless LAN ICs, WLAN NIC, USB” and finally, “Software”. I clicked on “Global” to download the file, unzipped it when the download was complete and then updated the driver on the adapter. SUCCESS. Now I get the same upload speeds as before, but my downloads speeds are now 57Mbps on the 2.4G band and 192 Mbps on the 5G band. Hope this information helps anyone dealing with the same issue.