Hi everyone,
Asus WL-500gx has 2 more USB ports "hidden inside". Here are some pictures of my 500gx now with 3 USB connectors - feel free to get inspired
I took a USB extension bracket for PC motherboards and unmounted one of the connectors. Some shuffling was needed to create the correct pinhead pinout. The on-board pinhead has only 2xDATA+, 2xDATA- (there are 2 ports) and GND. To make the USB complete, +5V is required. There's a spot prepared for a capacitor nearby - an ideal candidate for +5V and another GND for shielding. However this needs some soldering
Cable colors in my case are as follows:
DATA+ - green
DATA- - white
GND - black
shielding - black
DATA+ and DATA- are marked on the board as USB_3P/USB_4P and USB_3N/USB_4N respectively.
Mounting the USB connector on the back of the box is just a matter of handicraft. A drill and a sharp knife should suffice to do it nicely.