Comma.ai Launches a PCIe Gen4 X4 to USB4 Dock with Open-Source Firmware

Comma.ai launched chestnut, a PCIe Gen4 X4 to USB4 dock with open-source firmware, enabling GPU access over USB connections and macOS support via TinyGPU. The dock allows users to connect to a computer as a standard USB4 dock or use tinygrad for USB3/USB2 GPU access.

With a PC USB4 Connect chestnut to your computer and use it like any other USB4 dock. USB3 or USB2 Use tinygrad https://github.com/tinygrad/tinygrad to access the GPU over a USB3 or USB2 connection. Mac Follow the TinyGPU setup guide https://docs.tinygrad.org/tinygpu/ to use a supported GPU on macOS. Join the gpu-on-usb channel on the tinygrad Discord https://discord.gg/ZjZadyC7PK .