SNES Retro-C Cable Information
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For modders who are interested in making your own USB-C to SNES cable, here's all the information you'll need. This is not a full guide by any means, but this contains all the information to get you started!
*This cable, if wired according to these specifications, will be compatible with RetroSix SNES controllers. *See the Connection Table at the bottom to see where each wire must go!
Supplies
SNES Extension Cable
Diagrams
USB-C Male Header Pinout (Rear Side)

USB-C Pinout Full (Connector View)

SNES Male Connector USB-C Pinout
Source: igorkromin.net
USB-C to SNES Pinout Schematic
Connection Table
SNES Pin | USB-C Pin | USB-C Letter Code |
|---|---|---|
5v | VBUS | A4,B4,A9,B9,VCC,V+ |
Clock | TX1-,TX2- | A3,B3 |
Latch | RX1-,RX2- | A10,B10 |
Data | RX1+,RX2+ | A11,B11 |
GND | GND | A1,B1,A12,B12,GND,G |