Hello,
i am using a 64gb SanDisk Extreme micro xc v30 A2 card. It is read and writable with my Kamera (Canon Eos R) and my Phone (Xiaomi Note 7) but is not detected with my PC. I tried several card readers (intern and extern). It is not even detected with the san disk extreme pro uhs2 Reader. Not detected? Well it appears in the device manager but i can not find it in the working space to access it. Can you help me?
thank you
Please try the troubleshooting steps in the link below
Title: Memory card is not detected in Windows
Link: USB Flash Drive or Memory Card Not Detected in Windows
Title: Memory card is not detected in Mac
Link: USB Flash Drive or Memory Card Not Detected in macOS
Hope it helps!!
Considering that you have Windows 7 or later, it is likely that the partition does not have a drive letter assigned, you can use the disk manager to assign a letter to it so that it is visible.