Usb Device Id Vid 0951 Pid 1666 — Official

: You can copy files from the drive but cannot add or delete files. Cause : The NAND flash memory has reached its write-cycle limit, or the controller has entered a fail-safe mode. Solution : Unfortunately, for the PID_1666, this is often a hardware failure. There is no software fix. Back up your data immediately and replace the drive.

After cross-referencing official USB ID repositories (such as usb-ids and the Linux Kernel USB list), the device is identified as: Usb Device Id Vid 0951 Pid 1666

Look for an entry like: Bus 001 Device 003: ID 0951:1666 Kingston Technology DataTraveler 101 G2 : You can copy files from the drive

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\StorageDevicePolicies WriteProtect value and set it to Open Command Prompt as Admin, type select disk X attributes disk clear readonly 3. Reinstall Drivers for the PID_1666