Thought I'd tack on the back of this thread rather than start another one.
Now I've had a bit of a rationalisation of my cameras, all of them now use SDXC cards (UHS II). I have an old Lexar Professional USB 3.0 Dual Slot Car Reader that's about 8-10 years old, and I'm pretty sure doesn't support the additional speed of UHS-II cards, as the transfer rate from the card reader to the PC is about the same for all my cards (so Sandisk Extreme Pro 95mb/s (UHS I), Lexar Professional 1000 & 2000x (UHS II) and Sony M and G series (150mb/s and 300 mb/s UHS II).
I've seen from a bit of web searching that there might have been some firmware updates for this card reader, but the download section on Lexar's website is empty of any such downloads. So I'm thinking of buying a new card reader, but would really like to get one that leverages the very quickest transfer speeds from card to computer. As I say this would be SD card only, but not adverse to it being a dual format card reader like my current one say CF or XQD) for any future incompatibilities.
Anyone have any ideas please ?