This refers to the driver's ability to negotiate the fastest connection (typically USB 2.0 High-Speed or USB 3.0) once the device is connected in its preloader state.
It ensures that large OS files (often several gigabytes) are transferred without data corruption by maintaining a stable high-speed link. usb da download all(high speed auto detect)
When a phone won't turn on, "High Speed Auto Detect" helps the SP Flash Tool catch the brief window where the device's Preloader is active. This refers to the driver's ability to negotiate