- White - SWCLK or UART TX
- Red - Ground (yeah we know this isn't ideal)
- Black - SWDIO or UART RX
If you're fancying to connect to the debug port on a Pico WH, or the two ports on a Pico Debug Probe or anything else with a JST SH compatible 3-pin connector, this cable will do the trick. It has a 1mm pitch JST SH connector on one end, and 0.1" pitch socket connectors on the other.
Note that the colors we got are somewhat matchy with our '2mm PH' sized STEMMA cables, so if you are using them for the Debug Probe port, the colors will be as follow: