Info about pin USB on megadrum

Hi all!
for my box i would like to use the external port usb to connect my usb port on the panel of my box
But wich is the pin out on megadrum? i have the cable with this series:
1
yellow white red black
thanks for the support
for my box i would like to use the external port usb to connect my usb port on the panel of my box
But wich is the pin out on megadrum? i have the cable with this series:
1
yellow white red black
thanks for the support