Windows displays "USB Mass Storage Device" but cannot assign a drive letter or shows the capacity as 0 bytes.
Every USB hardware peripheral uses specific identification codes to introduce itself to your computer’s operating system. The system reads these numbers to automatically load the proper software driver. The Vendor ID (VID 0951) Usb Device Id Vid 0951 Pid 1666
If your VID 0951 PID 1666 drive is unresponsive but still listed inside your Device Manager, you can attempt to reflashing its low-level microcode using Mass Production (MP) tools. Step 1: Identify the Controller Manufacturer Windows displays "USB Mass Storage Device" but cannot
: The drive is detected in Device Manager but does not appear in "This PC." Cause : Windows did not assign a volume letter. Solution : Usb Device Id Vid 0951 Pid 1666