Usb Device Id Vid 058f Pid 1234 Full -

Below are the proven fixes, ordered from simplest to most advanced.

lsusb -v -d 058f:1234
sudo usb-devices | grep -A 10 "058f:1234"

In the complex ecosystem of Universal Serial Bus (USB) communication, every peripheral device is required to identify itself to the host computer through a pair of unique numerical identifiers: the Vendor ID (VID) and the Product ID (PID). The specific combination of VID 0x058F and PID 0x1234 belongs to Alcor Micro Corp., a Taiwanese semiconductor company. This essay examines the technical role of this identifier pair, its most common hardware implementations, and its significance in the broader context of driver management and system interoperability.

The Vendor and the Identifiers

Alcor Micro Corp. (VID 058F) is a well-known fabless semiconductor designer specializing in controllers for USB hubs, card readers, embedded storage, and input devices. The VID is assigned by the USB Implementers Forum (USB-IF) and serves as the manufacturer's signature. Within Alcor’s allocated VID space, the specific PID 1234 is assigned to a particular device class or product family. While a PID can technically be reused across different firmware revisions or internal models, the 058F:1234 combination is most famously associated with Alcor Micro’s generic USB 2.0 flash drive controllers and, notably, certain low-cost USB card reader chips (e.g., the AU637x series). However, its most notorious application is in security dongles and mass storage devices with "key" functionality, where the PID 1234 often denotes a basic, vendor-specific command set.

Device Class and Functionality

Upon enumeration, a device with VID 058F PID 1234 typically identifies itself as a Mass Storage Class (MSC) device, though it can also appear as a vendor-specific class. As an MSC device, it emulates a block storage device (like a hard drive or SD card reader). The Alcor controller integrates a microcontroller that handles the translation between the USB protocol and the underlying NAND flash memory or removable media.

In the case of flash drives, this controller manages wear leveling, error correction, and bad block management. However, Alcor controllers with this PID are often found in combo devices—for instance, a USB drive that contains both a public partition and a secured, encrypted partition accessible only via a vendor-provided utility. The PID 1234 may indicate the base firmware configuration without encryption, or a "bridge" mode awaiting firmware update.

Driver Behavior and OS Recognition

Modern operating systems (Windows 10/11, Linux, macOS) include native drivers for Mass Storage Class devices. Consequently, a device with VID 058F PID 1234 typically works without additional driver installation—it mounts as a removable drive. However, certain advanced features (partition switching, password protection, or manufacturer-specific commands) require a proprietary driver or utility from Alcor or the OEM that rebranded the chip.

A notable technical quirk: some counterfeit or "fake capacity" flash drives use this VID/PID combination. Malicious vendors alter the firmware’s reported capacity, causing the drive to corrupt data when writing beyond the true flash size. Forensic tools often flag 058F:1234 as a common identifier in such fraud cases due to the widespread availability of Alcor controller firmware modification tools.

Security and Firmware Considerations

The PID 1234 is often found in devices that support vendor commands not covered by standard USB storage specifications. For example, Alcor’s proprietary protocol can switch the device from removable disk mode to a CD-ROM (device firmware upgrade) mode, which is useful for deploying autorun content or firmware patches. This flexibility, however, has been exploited in "BadUSB" attacks, where a maliciously reprogrammed Alcor controller can emulate a keyboard or network card. While not inherently insecure, the availability of public firmware flashing tools for this VID/PID makes it a double-edged sword: legitimate for OEMs, dangerous if the device falls into untrusted hands.

Conclusion

The USB identifier VID 058F PID 1234 encapsulates the balance between standardization and vendor-specific extension in the USB protocol. As an Alcor Micro product, it reliably performs mass storage functions out-of-the-box on any modern OS. Yet, its deeper value—and potential risk—lies in its programmability and widespread use in low-cost storage devices. For the average user, it is an invisible handshake that just works. For the systems administrator or security researcher, it is a recognizable signature that may warrant deeper inspection, especially in contexts involving fake capacity drives or firmware-based attacks. Understanding such identifiers transforms a seemingly obscure pair of numbers into a practical diagnostic tool for evaluating device trustworthiness and expected behavior.

If you have landed on this page, you are likely staring at a cryptic string of characters in your Windows Device Manager, Linux lsusb output, or macOS System Information: “USB Device ID VID 058F PID 1234.”

This identifier can be frustrating. It might appear as an "Unknown Device," a "Yellow Exclamation Mark," or a device that simply refuses to work. In this comprehensive guide, we will break down exactly what VID 058F PID 1234 means, which hardware it belongs to, common driver problems, and step-by-step solutions to get your device functioning properly.

For advanced users, you can manually edit or add an INF file.

If the INF contains 058F and 1234 in the [Manufacturer] or [Strings] section, it will match your device.

While 1234 is the official Product ID assigned to this hardware, it is worth noting that in software development and testing, 1234 is often used as a placeholder ID. However, in the context of Alcor Micro (VID 058F), this is a legitimate hardware identifier for their card reader controllers.

Troubleshooting Context: If you are seeing this ID in your system logs but the device is not working, the issue is usually not the ID itself, but rather:

Summary: The proper feature of this device is its function as a USB 2.0 Mass Storage interface for multi-format flash memory cards, providing a standard, driver-free bridge for reading and writing data to removable media.

Understanding the USB Device: VID 058F PID 1234 The USB identifiers

identify a mass storage device, typically a generic USB flash drive, powered by a controller from Alcor Micro Corp

. These identifiers are critical for technicians attempting to recover data or repair "dead" flash drives that are no longer recognized by operating systems. Technical Specifications

When a device with these IDs is connected, it generally reports the following hardware profile: Vendor ID (VID): (Alcor Micro Corp.) Product ID (PID): Manufacturer: Product Model: USB Flash Disk / Mass Storage Device Common Controllers: Alcor Micro AU6986, AU6988, or AU6989SN series USB Version: USB 2.0 (High Speed) Common Use Cases and Problems usb device id vid 058f pid 1234 full

This specific VID/PID combination is often found in unbranded or "white-label" USB sticks. Users frequently encounter this ID when troubleshooting a device that shows "0 MB" capacity or "No Media" in Disk Management. In many cases, seeing

can indicate the controller has entered a "fail-safe" or "test" mode because the firmware is corrupted or the flash memory chip has failed. Troubleshooting and Repair

If your computer detects the drive but cannot access it, the following steps are commonly used by the tech community: Driver Reinstallation: Windows Device Manager to uninstall the "USB Mass Storage Device" entry under Universal Serial Bus controllers

and restart your PC to let Windows reinstall it automatically. Controller Identification: Use utilities like ChipGenius Flash Drive Information Extractor to confirm the exact Alcor controller model. Low-Level Formatting:

For corrupted firmware, specialized "Alcor MPTool" (Mass Production Tool) versions are often used to reflash the controller. Note that these tools are third-party and may cause permanent hardware damage if used incorrectly. Disk Cleaning: If the issue is a logical partition error, the Diskpart utility can be used to the drive and create a new primary partition.

Attempting to repair a flash drive with production tools will permanently delete all data on the device. specific version of the Alcor MPTool compatible with your controller's part number?

0 MB on a 32GB USB stick - Storage Devices - Linus Tech Tips

Alcor Micro USB Flash Drive (VID 058F, PID 1234) is a "Generic" mass storage device typically found in budget-friendly, unbranded, or promotional thumb drives. This specific hardware ID is notorious among tech enthusiasts for being associated with low-tier controllers that are frequently used in "fake capacity" drives or devices with high failure rates. Technical Overview Manufacturer: Generic / Alcor Micro Corp. Controller Vendor: Alcor Micro (common parts: AU6986, AU6988, or AU6989SN). Interface: USB 2.0 (High Speed). Current Draw: Max 100mA. Performance Review According to benchmark data from the NirSoft Speed Test Database , this device generally delivers a read speed around 9 MB/Sec

. 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

or failing after minimal use. They are "notorious for failing" and should not be used as a primary backup for critical files.

If the drive becomes corrupted, it often requires specific "AlcorMP" mass production tools to reset the firmware, which is a complex process for average users. Final Verdict

Extremely inexpensive; often given away for free as promotional items. Below are the proven fixes, ordered from simplest

Very slow transfer speeds; high risk of data loss; prone to firmware corruption; frequently associated with fraudulent capacity ratings. Recommendation: Only use this device for disposable, non-critical data

(e.g., carrying a few PDFs to a print shop). If you need reliable storage, reputable brands from retailers like are far safer options. Are you trying to recover data from a corrupted drive with this ID, or are you looking to verify if a drive is fake

USB Flash Drive Speed Tests - VID = 58f, PID = 1234 - NirSoft

The USB device ID VID 058F PID 1234 identifies a Flash Drive or Mass Storage Device manufactured by Alcor Micro Corp..

This specific combination is commonly associated with generic or "no-name" USB sticks and is frequently found in devices using Alcor Micro controllers, such as the AU698x series (e.g., AU6986, AU6988, or AU6989). Device Specifications Vendor ID (VID): 058F (Alcor Micro Corp.). Product ID (PID): 1234 (Flash Drive / Mass Storage). Device Type: USB Mass Storage Device (Flash Disk). Protocol Version: Typically USB 2.0 (High Speed). Controller Vendor: Alcor Micro. Common Uses and Issues

This ID is often seen in high-volume, generic flash drives. Because these IDs are programmable, they are sometimes found on "fake" or counterfeit drives where the reported capacity (e.g., 32GB) does not match the actual physical NAND flash storage.

Firmware Repair: If the drive shows "No Media" or "0MB" capacity, users often look for specialized "Alcor MP" (Mass Production) tools specifically for the AU69xx controller to reflash or repair the drive.

Driver Identification: Windows and other operating systems use this VID/PID to load the standard USB Mass Storage Class driver. No special third-party driver is usually required for basic operation. How to Verify Your Device

You can verify these identifiers on different platforms to confirm the hardware:

Windows: Right-click Start > Device Manager > Universal Serial Bus controllers > Right-click device > Properties > Details > Hardware IDs. Linux: Open a terminal and run the lsusb command. macOS: Go to About This Mac > System Report > USB. Flash Drive — USB 058F:1234 - DeviceHunt

The USB Vendor ID (VID) 058f and Product ID (PID) 1234 correspond to a generic, low-cost USB flash drive controller commonly found in unbranded or promotional USB drives.