Instructions to install a USB type A connector in the WRTU54G-TM

1 - Lift pin 21 of the SimPro chip
2 - remove R651, R652 and R653
3 - pin 1 (V+) of the USB type-A connector to pin 22 and/or 23 of the SimPro chip
4 - pin 4 (GND) of the USB type-A connector to pin 2 and/or 3 of the SimPro chip
5 - pin 2 (D-) of the USB type-A connector goes to the pad of R652 that's farthest from the Simpro chip
5 - pin 3 (D+) of the USB type-A connector goes to the pad of R653 that is farthest from the Simpro chip

- Thanks to this post by ccase.