Mac Pro can't read SD cards anymore
Hi,
I need some help regarding a strong problem with my Mac Pro, that can't read SD cards anymore. Sticking any reader in any USB slot, a SD card isn't recognized anymore. Strange also when I put a CF card in the same reader, it works and I can see the CF card on my desk.
Anyone an answer?
(Mac Pro 3,1, latest version El Capitan, several readers used, same problem)
Mac Pro, OS X Yosemite (10.10.5)