If you see these, the driver is working correctly.
Sometimes, the device is functioning correctly, but Windows fails to automatically locate the correct driver from its local repository. It assigns a generic label ("USB Composite Device") but flags it with a yellow exclamation mark because the specific 901D functionality is not enabled. qualcomm usb composite device 901d
Obtain the latest Qualcomm USB drivers from a reputable source like the Qualcomm Software Center Driver Scape Manual Update: Device Manager (Win + X > Device Manager). Right-click the entry and select Update driver "Browse my computer for drivers" "Let me pick from a list..." "Have Disk" If you see these, the driver is working correctly
: The device is commonly identified by the string USB\VID_05C6&PID_901D . Obtain the latest Qualcomm USB drivers from a
This composite interface often bundles multiple sub-drivers (interfaces) into one connection, including: Diagnostic Interface (DIAG):