About chestnut
chestnut connects a desktop GPU to comma four for larger driving models. It can also connect to a computer over USB4.
Set up a chestnut
The chestnut product guide covers the included parts, GPU installation, power connections, and placement in your car.
Using chestnut
If you bought a ready-to-drive chestnut, you must use the release-chestnut branch on your comma four to take advantage of the latest big models.
chestnut troubleshooting
Check the GPU, power, and USB connections first. For help from other chestnut users, visit the #chestnut channel on our community Discord.