Yester day I could not sleep, so what was I doing? Yes! I was soldering the secound RetroUSB chip and I also removed the big connection socket for the power button and the led.
On the other end, the end that was connected to the moder board the pinout looked like this:
1. GND
3. GND
5. USB_VD2+
7. USB_VD2-
9. +5VSUS
11. USB_VD5-
13. USB_VD5+
I used pin 9 for both of the ports and I connected them to a 2mm socket.
…and today I had time to test it and everything worked!
input: RetroUSB.com RetroPad as /devices/pci0000:00/0000:00:10.1/usb3/3-1/3-1:1.0/input/input4
generic-usb 0003:F000:0003.0001: input,hidraw0: USB HID v1.00 Gamepad [RetroUSB.com RetroPad] on usb-0000:00:10.1-1/input0
input: RetroUSB.com RetroPad as /devices/pci0000:00/0000:00:10.2/usb4/4-2/4-2:1.0/input/input5
generic-usb 0003:F000:0003.0002: input,hidraw1: USB HID v1.00 Gamepad [RetroUSB.com RetroPad] on usb-0000:00:10.2-2/input0