If you are trying to identify a USB flash drive that shows up in your device manager as and PID 1666 , you are looking at one of the most common USB drives on the market. This identification code belongs to the Kingston Technology family, specifically within the DataTraveler series, often associated with the DT100 G3 or similar USB 3.0/3.2 models.
Most users search for a VID/PID link because they are experiencing driver issues. If you are seeing this ID in your Windows Device Manager, it usually means one of the following is happening:
By contrast, the 0x1666 PID is strictly associated with mass storage devices (DataTraveler flash drives).
Click to allow the software to map the USB topology. Your drive should appear in one of the configuration ports. usb device id vid 0951 pid 1666 link
While the external model might be a "DataTraveler 100 G3," the internal components can vary. Common configurations for this ID include: : Often uses the Phison PS2251-19 or PS2251-07 .
This specific model is a popular target for counterfeiters. If you bought this drive from a third-party marketplace (not a major retailer) and the storage capacity seems suspicious (e.g., showing as 1TB for a very low price) or files are disappearing after writing, you may have a fake drive. Tools like can verify the true capacity of the flash memory.
Are you seeing an error in your system settings? If you are trying to identify a USB
USB Flash Drive Speed Tests - VID = 951, PID = 1666 - NirSoft
Practical tips (bonus — up to 10 bonus points, awarded at grader's discretion)
If your computer recognizes the drive but cannot access it, or if it shows up as "Unknown Device" with the VID/PID shown in the properties, you likely have a corrupt driver stack. If you are seeing this ID in your
If standard formatting utilities fail, you must interface directly with the flash controller using specialized Mass Production Tools (MPTool). This process completely overwrites the drive topology and destroys all existing data. Step 1: Extract Exact Hardware Telemetry
Stop chasing sketchy driver download sites. The true solution to most VID_0951&PID_1666 problems lies not in a mysterious “link,” but in understanding that this is a legacy device supported natively by your operating system.
Open Device Manager, right-click the USB device, and select "Uninstall device". Remove the USB, restart your computer, and plug the USB back in to allow Windows to reinstall the drivers automatically. 2. Write-Protected or Raw Filesystem