hi. is there any difference in pluggin in devies from the motherboards usb port on the back or the case usb port in the front? Just say i plug in my mouse or keyboard on the case usb port, will there be a problem?
No problem, either way.
If you will leave a device permanently attached, like a keyboard, I think it is better to attach it to the rear motherboard port. It is less likely to get unplugged or loose there.