@NikLaus That was the first thing I tried. Didn't work for me!!

@NikLaus I had a similar (unresolved) problem. See my post T4U Plus runs at high speed not superspeed

@basa48 Unfortunately no real solution. The T4U Plus refused to connect at superspeed with recommended drivers or TP-Link standard drivers. The T3U DOES connect at superspeed and is giving me...

@basa48 OK, so I've decided to ditch the T4U Plus in favour of my T3U Mini. With the drivers suggested above it tests at between 80-100Mbps download which iis marginally FASTER than the T4U Plus!...

We have a dual band Virgin Hub 3 router and my PC is reported as connected at 5G at 235Mbps. My PC is upstairs about 15m from the router with a brick wall in between. Signal strength status is 4 bars...

@basa48 I should say the new drivers you suggested do work better (faster downloads) but USB port still runs at high speed.