1234 - A generic ID used for their Mass Storage Device line.
Step 1: Identify the Specific Controller
If automatic installation fails, force Windows to use a compatible driver: usb device id vid 058f pid 1234 full
1234 (Generic Flash Drive / USB Mass Storage Device). Device Type: USB 2.0 Mass Storage Device. Controller Vendor: Alcor Micro. Common Controller Parts: AU6989SN, AU6986, or AU6988.
. While functional for small document transfers, it is significantly slower than modern USB 3.0 or high-performance USB 2.0 drives. Reliability: Users frequently report these drives showing 0 MB capacity 1234 - A generic ID used for their Mass Storage Device line
Before diving into specifics, it is crucial to understand what these codes represent.
The microcode running on the Alcor Micro controller chip (such as the AU6989SN , AU6986 , or AU6988 architectures) has become corrupt. When the software loop fails to map the flash memory translation layer, the controller defaults to a standard bootloader recovery ID ( VID_058F&PID_1234 ) to allow factory-level reflashing tools to communicate with it. 2. Flash Memory NAND Degradation Controller Vendor: Alcor Micro
Every USB device uses distinct values to register itself within an operating system:
usb 2-1: new high-speed USB device number 12 using ehci-pci usb 2-1: New USB device found, idVendor=058f, idProduct=1234 usb 2-1: Product: Mass Storage Device usb 2-1: Manufacturer: Alcor Micro usb-storage 2-1:1.0: USB Mass Storage device detected scsi host8: usb-storage scsi 8:0:0:0: Direct-Access Generic USB Flash Disk 7.76 PQ: 0 ANSI: 4 sd 8:0:0:0: [sdb] Attached SCSI removable disk
| Attribute | Value | |---|---| | | USB Mass Storage Device | | Vendor ID | 058F (Alcor Micro Corp.) | | Product ID | 1234 (Generic Fallback) | | Device Name | Generic USB Flash Disk | | Vendor Name | Generic | | Product Revision | 7.76 | | Power Consumption | 100mA | | USB Speed | USB 2.0 High-Speed (480 Mbps) |