It seems like there used to be some similar issues with certain USB devices as well.

@Carnival-Boy said:

@thecreativeone91 said:

I easily have ten in use at the same time.

TEN!?? Can you list 'em?

4x Red Mag Reader
2x USB Media Card Readers
USB Keyboard
USB Mouse
Webcam
BMD UltraStudio Pro
External 5 Bay USB 3.0 Raid/JBOD

No USB Hubs used. I have 13 Ports on my Desktop.