USB Flash Drive Speed Tests - VID = 346d, PID = 5678 - NirSoft
: If the device is not recognized, you can manually update the "USB Mass Storage Device" entry in the Windows Device Manager . Summary Table: VID 346D / PID 5678
: Use the H2testw utility to verify the true capacity of the drive. It writes data until the drive is full to check if the reported size is fake. vid 346d pid 5678 best
: For drives that are corrupted or showing incorrect sizes, the FirstChip MpTools (e.g., version V1.0.5.2) is the primary software for flashing the controller and restoring the true factory capacity.
The USB identification and PID 5678 typically refers to generic flash drives often marketed as " VendorCo ProductCode " or " Disk 2.0 USB Flash Drive Speed Tests - VID =
, can reach read speeds of up to and write speeds near 18 MB/s .
: Most generic versions achieve read speeds of 18–24 MB/s and write speeds of 4–7 MB/s . High-End Variations : Some models, such as the Samsung MUF-16BE : For drives that are corrupted or showing
Devices with VID 346D and PID 5678 are typically USB 2.0 or 3.0 mass storage devices. Based on community benchmarks from platforms like NirSoft's USB Speed Test, performance varies significantly by brand:
If you encounter errors like "Please insert a disk" or "Unknown Capacity," these tools and methods are considered the best for recovery:
While these drives are widely available, they are frequently linked to "fake capacity" issues where the firmware reports a larger size than the physical NAND flash memory can actually hold. Technical Specifications and Performance