USB Flash Drive Speed Tests - VID = 951, PID = 1666 - NirSoft
Insert the drive and run the utility. Look specifically for the following entries:
This specific hex code is globally assigned to Kingston Technology by the USB Implementers Forum. It forces your operating system to look up custom or generic mass storage subsystem layouts proprietary to Kingston. usb device id vid 0951 pid 1666 link
This is the most technical reason for searching these IDs. If your flash drive has suddenly stopped working, become "read-only," or is asking to be formatted repeatedly, the controller inside the stick may be malfunctioning.
If you are checking if your drive is performing correctly, you can compare it against USB Flash Drive Speed Tests on NirSoft. USB Flash Drive Speed Tests - VID =
Connect the drive directly to your computer's primary ports—the rear ports on a desktop tower or the main ports on a laptop—rather than using external, unpowered USB hubs.
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. This is the most technical reason for searching these IDs
Internally, drives under this Product ID are not entirely uniform. Kingston sources diverse internal hardware depending on production batches and memory capacities. Analysis via flash interrogation utilities indicates these drives typically carry a (such as the PS2251-07 , PS2307 , or PS2251-19 ) paired with Hynix or Toshiba Triple-Level Cell ( TLC ) flash memory architecture. Real-World Speed Performance and Benchmarks
Most flash memory sticks using the VID 0951 PID 1666 string rely on the Phison Electronics controller platform. Diagnostic logs reveal the standard physical layout: Component Type Technical Specification Go to product viewer dialog for this item. (also logged as PS2307) Firmware Target F/W 08.00.50 or matching generational revisions Flash Memory Type Toshiba or Hynix TLC / MLC Flash ID blocks