The USB Device ID VID 0951 PID 1666 identifies a high-speed flash drive from Kingston Technology , most commonly the Kingston DataTraveler 100 G3
This is the #1 complaint for the DT100 G2. It does not mean the driver is missing. It means the USB controller could not communicate with the device. usb device id vid 0951 pid 1666 link
. These identifiers (Vendor ID 0951 and Product ID 1666) are used by your operating system to recognize the hardware and load the appropriate communication protocols. Device Identification & Specifications The USB Device ID VID 0951 PID 1666
If your OS is not recognizing it despite these, the issue is likely hardware (failing USB port, broken drive, or damaged connector). or damaged connector).