To flash factory firmware, recover bricked devices, revert from custom ROMs, or bypass security, often appearing in device manager as a "Qualcomm HS-USB QDLoader 9008" port.
Qualcomm Emergency Download Mode () is a low-level diagnostic mode found on Qualcomm Snapdragon chipsets, designed to flash firmware directly onto a device’s flash memory. It is widely used to unbrick devices that are otherwise completely non-functional, such as when a phone is stuck in a boot loop or has a corrupted bootloader. Key Aspects of EDL Mode
What is the of your phone (e.g., Xiaomi Redmi Note 10, OnePlus 9)? Are you trying to unbrick it or simply flash a new ROM ? Is your device bootloader locked or unlocked ?