Is there some magic to loading music from a USB drive into the radio? I made one drive that worked fine, but then made a second and a third which the radio won't read at all. They are all FAT32, with no differences that I can tell, yet the radio won't recognize the newer ones.

 

Maybe the newer drives are USB 3.0 and the port in the car is 2.0 and isn't providing enough power to the drives? I really don't know, just a wild guess.

 

all of the drives were 3.0 capable, they are all exactly the same brand and model.