Usb Device Id Vid 058f Pid 1234 Full -

Do not use generic "driver updater" tools. Instead, get the official driver:

Option A – From your PC or motherboard manufacturer:

Option B – Alcor generic driver (if manufacturer no longer supports):

If your operating system fails to recognize the device despite seeing the VID/PID, one or more of these issues is present:

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.

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.

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

Understanding the USB Device VID 058F PID 1234 If you have discovered the identifier VID 058F PID 1234 in your Device Manager, you are likely looking at a generic USB flash drive built with an Alcor Micro Corp. controller. This specific combination is one of the most common signatures for mass-produced, "no-name" thumb drives and is frequently associated with firmware issues like the "No Media" or "0 MB Capacity" errors. What is VID 058F PID 1234?

Every USB device has a Vendor ID (VID) and a Product ID (PID) to help the operating system identify it.

Vendor ID (058F): Assigned to Alcor Micro Corp., a major manufacturer of USB controller chips.

Product ID (1234): A generic product ID often used by Alcor Micro for mass storage devices or flash drives.

This ID often appears when a drive is in a "test" or "generic" state, or when the firmware has become corrupted, causing the computer to see the controller chip but not the actual memory storage. Common Issues and Symptoms Devices with this ID often exhibit the following problems: Do not use generic "driver updater" tools

"No Media" Error: The drive is detected as a letter (e.g., G:) but shows "0 bytes" of space and cannot be opened.

Write Protection: You can see your files but cannot delete or add new ones.

Generic Name: The device appears as "Generic USB Flash Disk" or "USB Mass Storage Device" rather than a brand name like Kingston or SanDisk. How to Fix a Malfunctioning VID 058F PID 1234 Drive

If your drive is showing "0 MB" or "No Media," standard formatting usually won't work. You likely need a Production Tool (MPTool) specifically designed for Alcor Micro controllers.

Identify the Controller: Use a tool like ChipGenius to find the specific "Controller Part-Number" (e.g., AU6989SN, AU6986).

Download the MPTool: Search for the Alcor Micro "MPTool" or "AlcorMP" version that matches your controller number on specialized sites like USBDev.ru or FlashBoot.ru.

Reflash the Firmware: Run the tool to "Low-Level Format" or reflash the drive. Warning: This will permanently erase all data on the device. Quick Troubleshooting Tips

Before attempting a high-risk firmware flash, try these standard Windows fixes:

Standard USB Identifiers - Windows drivers - Microsoft Learn

To find more information about this specific device, you might need to:

Possible Reasons for Interest:

If you have a physical device and want to install it on your computer, you can usually find drivers:

If you're a developer, ensure you're also following the USB-IF guidelines for choosing and using VIDs and PIDs for your own devices.

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.

sudo lsusb -v -d 058f:1234

It could be a misconfigured device or a counterfeit product (e.g., a fake keyboard or mouse that internally uses a generic Alcor controller). The vast majority of reports for 058f:1234 are USB flash drives.

The USB device ID VID 058F PID 1234 is almost always an Alcor Micro USB 2.0 Hub or a basic multi-card reader. In 99% of cases, you do not need to download any external driver. Your operating system’s native USB stack will handle it.

If you encounter problems:

Remember: A "full" understanding of this ID saves you hours of hunting for non-existent driver downloads. Bookmark this guide, and next time you see 058F:1234 in your logs, you will know exactly what it is – and exactly what to do.

Further reading:

Last updated: October 2025 – Verified against Windows 11 23H2, Ubuntu 24.04, and macOS Sonoma. Option B – Alcor generic driver (if manufacturer

If you have discovered a device labeled VID 058F PID 1234 in your Device Manager, you are likely dealing with a Mass Storage Device powered by an Alcor Micro Corp. controller. This specific ID combination is famous in the tech world because it often appears when a USB flash drive has entered a "generic" or "emergency" mode due to firmware corruption or hardware failure.

Below is a full breakdown of what this ID means and how to handle it. Technical Breakdown: VID 058F PID 1234

Vendor ID (VID) 058F: This uniquely identifies the manufacturer as Alcor Micro Corp., a major producer of flash memory controllers.

Product ID (PID) 1234: This is a generic product code often used for Alcor-based Flash Drives and Card Readers.

Common Behavior: When a drive shows this PID, it may appear as "Generic USB Flash Disk" with 0MB capacity or be marked as "Write Protected". Why Is My Device Showing This ID?

There are three primary reasons your computer might see this specific ID:

Firmware Corruption: The internal software (firmware) of the USB controller has crashed, causing it to revert to a default "safe" identification mode.

Fake Flash Drives: Many counterfeit high-capacity drives use Alcor controllers. If the drive fails or is "reset," it often defaults to this ID.

Standard Operation: Some older Alcor-based card readers or OEM flash drives use this ID as their primary identifier. Troubleshooting and Drivers

If the device is not functioning correctly, follow these steps: 1. Identify the Specific Controller

Because "PID 1234" is generic, you need to know which Alcor chip is inside (e.g., AU6989, AU6986) to find the right repair tool. Fixing a fake USB flash drive – Roo's View - Lowtek.ca

USB Device ID VID 058F PID 1234 identifies a generic Mass Storage Device (typically a Flash Drive) powered by an Alcor Micro Corp. controller DeviceHunt Core Specifications Manufacturer: Alcor Micro Corp. DeviceHunt Device Name: Generic USB Flash Disk / Mass Storage Device USB Protocol: USB 2.0 (High Speed) www.pc-3000flash.com Max Current: Technical Controller Details

This specific VID/PID combination is often a "placeholder" or generic ID used by several Alcor controller models before or during custom branding . Common controllers found in these devices include: www.pc-3000flash.com Performance Expectations user-submitted speed tests

, performance varies significantly depending on the flash memory chip used inside: Read Speeds: 15 MB/s to 50 MB/s Write Speeds: 4 MB/s to 15 MB/s Commonly seen in sizes from 2GB to 32GB , though some larger fake-capacity drives also use this ID If your device shows 0MB capacity

or "No Media," it often indicates a corrupted firmware or a "fake" drive where the controller has lost its connection to the flash memory

If you're trying to fix a "Write Protected" or "0MB" error, I can help you find the specific AlcorMP repair tool version for your controller. Would you like to know: extract the Flash ID to find the right tool? operating systems are best for running these repair utilities? How to verify if the drive is a "fake" capacity

0 MB on a 32GB USB stick - Storage Devices - Linus Tech Tips 11 Oct 2014 —

Based on the USB ID VID 058F PID 1234, here is the full breakdown of the device and its proper feature set.

Is VID 058F PID 1234 dangerous?

In most cases, no. However, security researchers have noted that:

Safe practices: