SDXC UHS-II Memory Card not working

[Domi Radzicka]

Hello, I recently bought a SDXC UHS-II Memory Card from Lexar. I’m having issues with it but unsure if it’s the camera or the card. It seems to work is slot 2 but slot 1 doesn’t even show that it’s in. Other cards (UHS-I cards) work fine is slot 1 so I don’t think it’s an issue with slot 1. 
 

Has anyone else had the same issue and have any solutions? Thanks 

[SAF Admin]

Hi Domi and welcome to the forum!

Can you post some details?

• What camera do you use?
• What is the exact product name of your Lexar card?

Andreas

[mathuyaar76]

u need specific readers. I had the same issue with the 1TB 170MB/sec SanDisk Extreme Pro microSD using SanDisk's own Extreme Pro Type-C SD card reader (the same card reader had no problem hitting 250-300MB/sec with UHS-II cards).

It seems only some of SanDisk's card readers actually support their custom non-standard protocol to go beyond the 99MB/sec on the UHS-I spec.