Tesla Dashcam USB Drive: Requirements, Errors, and What to Buy
Tesla's own spec for a Dashcam and Sentry Mode drive is short: at least 64 GB, a sustained write speed of 4 MB/s or better, USB 2.0 compatible, formatted as exFAT with a TeslaCam folder, and plugged into the right port, which on most cars built since 2020 is the USB-A port in the glovebox. Many "Dashcam unavailable, check USB drive" errors trace back to one of those five lines. This page decodes the on-screen errors, walks through formatting on the car and on a computer, explains the 24-hour footage buffer, which needs a 1 TB drive and, per NotATeslaApp, a car with the newer AMD media computer, and names the three likeliest drives at the makers' October 2026 list prices.