Usage:

• Plugs work on either side.
• System = connects to the computer.
• Keyboard = connects to the keyboard.
• You may need a jumper to connect the system side.
  • EG: For PS/2 you'll need a male-to-male Mini-Din 6 cable.

Updating firmware:

• Reboot the Pico 2 into bootloader mode:
  • Hold the white button (near the MicroUSB connection).
• Attach (via MicroUSB connection) the Pico 2 to a PC.
• Release the button.
• It should show up as a drive like a USB Flash module.
• Copy the UF2 firmware file to the drive.
• The drive will disappear once it's flashed.

Config interface:

• There is a config interface via the MicroUSB connection.
• It shows up as a serial port (Windows: COMx Linux: ttyACMx)
• Connect with a good terminal app at 115200 baud
• I use tio for this (Win: tio-3.9-win.zip)
• help for command list. menu gets you a TUI version.
• Not fully documented or tested yet, use at your own risk :)