In Windows, right-click the Start button and select Disk Management . If the drive appears as "Unallocated" or has no drive letter, right-click it to Assign a Drive Letter or create a New Simple Volume .
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
The Product ID is assigned by the manufacturer to differentiate between their various product lines, models, or controller configurations.
This code identifies the specific model or product family, in this case, the DataTraveler 100 G3 and similar variants. Usb Device Id Vid 0951 Pid 1666
Last updated: May 2026
NamingSystem USB VID and PID as a device identifier - FHIR specification
Use the Phison MPALL tool to re-flash the firmware. This will erase all data, but often fixes the "write-protected" issue, as discussed in this forum thread. 2. Driver Reinstallation In Windows, right-click the Start button and select
The identifier is more than a technical nuisance. It is a precise signature that tells a complete story: a Kingston DataTraveler 101 G2, built around 2010–2013, running USB 2.0 speeds, designed for basic file storage.
If you are considering buying this drive:
Device Manager shows "Unknown USB Device (Device Descriptor Request Failed)". Troubleshooting and Repair Steps Reinstall Drivers The Product ID is assigned by
This hardware ID is most commonly associated with the and other related models like the DTIG4 or Kyson . Manufacturer (VID 0951): Kingston Technology. Product (PID 1666): DataTraveler 3.0 / 100 G3 Series.
After cross-referencing official USB ID repositories (such as usb-ids and the Linux Kernel USB list), the device is identified as:
", the digital signature VID 0951 PID 1666 reveals the underlying processing chip and NAND flash memory configuration: Hardware Component Common Internal Specification Phison PS2251-07 (also known as PS2307) Memory Flash Type Hynix or Toshiba TLC (Triple-Level Cell) NAND Protocol Version USB 3.0 / USB 3.1 Gen 1 (Backwards compatible with USB 2.0) Firmware Signature PMAP (Standard Phison firmware identifier)
18;write_to_target_document1a;_Pnfuabj9Grzdp84P5_jwuAQ_20;71d; Kingston DataTraveler 3.0 18;write_to_target_document7;default0;1e1;