BlogContacte 24/7Accés clients
CA
Accés clients

Vid 346d Pid 5678 Best Patched __full__ Today

The identifiers point to a specific category of USB flash drives often associated with Shenzhen SanDiYiXin Electronic Co., Ltd.

. These devices are frequently identified by systems as "VendorCo ProductCode" or "Disk 2.0" and are known for their varied performance and high likelihood of containing repurposed or "black-label" flash memory. The Identity of VID 346D / PID 5678

In the world of USB hardware, every device has a unique fingerprint. Vendor ID (VID): 346D belongs to Shenzhen SanDiYiXin Electronic Co., Ltd.. Product ID (PID):

5678 is a common generic identifier used for mass-market USB storage controllers. The Controller: These drives typically utilize the FirstChip (FC1178 or FC1179)

series of controllers. This specific hardware is often used for high-volume, budget-friendly drives. The "Best Patched" Reality vid 346d pid 5678 best patched

When users search for "best patched" versions of these drives, they are usually looking for ways to fix common issues like corrupted partitions, incorrect reported capacity, or "Write Protected" errors. Because these drives often use lower-grade flash memory, they are prone to failure but can sometimes be revived with specific "MpTools" (Mass Production Tools). Recovering the Drive:

If the drive becomes unreadable or displays as "No Media," technical users often use FirstChip MpTools

to re-flash the firmware. This "patches" the controller's logic to recognize the flash memory again, essentially returning it to factory settings. Performance Tweaks:

Some users have found that these drives perform significantly better when formatted as The identifiers point to a specific category of

rather than FAT32, reporting noticeable jumps in transfer speeds. Capacity Verification:

A common issue with these specific IDs is "capacity spoofing," where a drive might report 64GB but only physically hold 16GB. Tools like are used to verify the "true" patched capacity. Speed and Reliability According to user-submitted benchmarks on sites like NirSoft's USB Speed Database

, performance for VID 346D / PID 5678 varies wildly. Sequential read speeds can hover around 19MB/s, while write speeds might be as low as 6.5MB/s. They are best suited for light data transfers rather than high-performance tasks or long-term backups.

If you are dealing with a faulty drive with these IDs, the "best" way to patch it is to identify the exact controller model (usually by opening the case or using ChipGenius ) and applying the matching FirstChip MpTools firmware update. Are you currently trying to repair a drive with these IDs, or are you looking for a firmware download USB 3.0 Flash Drive Speed Tests - VID = 346d, PID = 5678 On macOS: About This Mac → System Report

Since this appears to be a very specific driver, USB hardware ID, or firmware reference (common in device manager for things like webcams, USB-to-serial adapters, or specialized industrial gear), I have written the post to solve the general problem of chasing down a "broken" VID/PID combo and finding the "best patched" solution.

On macOS:

About This Mac → System Report → USB → find the device.

✅ Pro tip: If the VID/PID match but the device is a brand name (e.g., Arduino clone, USBasp, HID programmer), note that too.

Step 3: Disable Driver Signature Enforcement (Temporarily)

This is the scary part for most users. To install the best patched driver, you must tell Windows to relax its rules.

Step 4: The "Legitimacy" Patch

If you are using the vSpace Pro software, it will eventually demand a license key for L-series devices.

On Windows:

  1. Open Device Manager
  2. Right-click the problematic device → Properties
  3. Go to Details tab → Hardware Ids
  4. Look for USB\VID_346D&PID_5678

2. FTDI Legacy Driver with VID/PID Override

Some clones pretend to be FTDI but use 346D:5678. This patched FTDI driver forces compatibility.