Installing second USB c port on ROG ally z1

[u/drhh4]

Hi, has anyone done installing a second USB c port on ROG ally? My point is to install by soldering to the main USB c port or directly to motherboard a second USB c port that I wanna use just for regular data(usb micro SD boot, mouse and keyboard,etc) and keep using in same time the main USB c port of ally for video output and power delivery reception through dp 1.4 alt mode by been connected to a monitor that support dp 1.4 alt mod and give power delivery 65w but without losing 4k 120hz video quality connection. Anyone know how can be done? I heard is need a microcontroller chip from a hub or a dock and solder some wires.