LPC55S69 detected on back usb ports but not on front

[a7plagne]

I have a weird problem.
I have a desktop computer with USB ports on the back of the motherboard as well as on the front. But my LPC55S69 board is only detected on the back ports. Nothing disabling but I wonder why?

I didn't find anything similar on the forum (I probably didn't look for English as it is not my mother tongue).
Have any of you ever had this problem?

Thank you in advance,
Arthur.

[converse]

Power.

USB 2 ports can supply 100mA or 500mA. Most LPC demo boards require 500mA. The front ports are probably meant for low power devices such as mouse, keyboard etc. This should be documented in the manual for your motherboard.