GoKawiilDeveloper modifies €40 Cable Matters USB-C hub to run as Nintendo Switch 2 dock
A hobbyist dissected a Cable Matters 7-in-1 USB-C hub to figure out why it wouldn't output video to a TV from a Nintendo Switch 2, despite correctly negotiating USB-C power delivery and DisplayPort Alt Mode. Using a USB-PD sniffer and fwupd's existing support for the hub's VL103 controller chip, they traced the issue to Nintendo's proprietary vendor-defined PD messaging, which the standard hub firmware doesn't implement.