0 MB on a 32GB USB stick - Storage Devices - Linus Tech Tips 11 Oct 2014 —
The USB device ID identifies a Flash Drive or Mass Storage Device manufactured by Alcor Micro Corp. .
| Parameter | Typical Value | | :--- | :--- | | USB Version | USB 2.0 High‑Speed (480 Mbps) | | Power Consumption | 100 mA – 200 mA | | Controller Vendor | Alcor Micro (安国) | | Common Controller Models | AU6981, AU6982, AU6983, AU6984, AU6985, AU6986, AU6987 | | Memory Types | MLC, TLC, or Samsung/SanDisk/KIOXIA NAND | | Reported Device Name | “Mass Storage Device” or “Generic USB Flash Disk” | | Reported Firmware Version | 7.76 | | VID/PID in Linux | ID 058f:1234 Alcor Micro Corp. Flash Drive |
When the Product ID flips to , it indicates that the firmware has failed, the controller cannot talk to the NAND flash memory, or the drive has been masked by generic placeholder values due to data corruption. This guide details the causes of this issue and provides step-by-step instructions for recovery. Technical Breakdown: What VID 058F PID 1234 Means usb device id vid 058f pid 1234 full
Unplugging the drive while a write operation is active disrupts the data mapping tables inside the controller. Technical Breakdown of the Device Architecture
USB Flash Drive Speed Tests - VID = 58f, PID = 1234 - NirSoft
Based on community speed tests and technical logs from NirSoft and DeviceHunt : Common Details Generic USB Flash Disk, Mass Storage Device, JetFlash Read Speed 0 MB on a 32GB USB stick -
VID_058F PID_1234 is an — typically a basic card reader or a suspect low-end/counterfeit flash drive. The term full likely denotes USB Full-Speed (12 Mbps) operation or a complete driver identifier. While functional for simple data transfer, this device ID is a red flag for performance issues or capacity fraud.
Search for an Alcor Micro MPTool specifically matching your controller part number. Reliable databases for these utilities include sites like USBDev.ru or MyDigit.
The drive letter does not appear in File Explorer. Flash Drive | When the Product ID flips
According to databases like DeviceHunt and speed test records from NirSoft , here are the standard details for this device: 058F (Alcor Micro Corp.).
0 MB on a 32GB USB stick - Storage Devices - Linus Tech Tips
Because the device identity has flipped to PID 1234 , you cannot format it using traditional Windows tools like diskpart or standard file explorers. You must rewrite the drive's firmware using an Alcor Mass Production Tool (MPTool). Step 1: Download the Exact MPTool Architecture
Every USB device uses identification strings to tell the operating system what drivers to load:
To restore a drive with these IDs, you must typically reflash the firmware using "Mass Production" (MP) tools specifically designed for Alcor controllers. Alcor Micro - USBDev.ru