inside was struggling. The drive was in "Read-Only" purgatory. Most people would have tossed it, but Arthur wanted to see what was "best" about a drive with such a generic identity. He downloaded a specialized flashing tool—the FirstChip MpTools
| Problem | Solution (Best Fix) | | :--- | :--- | | Device disconnects every few minutes | Go to > Change plan settings > Change advanced power settings > USB settings > USB selective suspend > Set to Disabled . | | Driver installs but keyboard/mouse don't work | Force the driver to use the USB Composite Device stack. In Device Manager, right-click the device > Update driver > Browse > Let me pick > Select "USB Input Device" (not HID-compliant). | | Windows says "Best driver already installed" but features missing | Manually download the manufacturer's full software suite (e.g., "Generic Wireless Combo Utility v3.2") which contains custom .dll files the base driver lacks. | | VID 346D PID 5678 appears as "Unknown USB Device (Device Descriptor Request Failed)" | This is a hardware handshake issue. Unplug the device, uninstall all USB root hubs in Device Manager, reboot, then replug. The "best" driver cannot fix a corrupted firmware—you need the manufacturer's firmware reflash tool. |
If your computer refuses to recognize the drive, it is usually a driver issue rather than a broken drive. Because this drive has a known identifier, you can easily force Windows to recognize it: Right-click the button and select Device Manager . Expand the Universal Serial Bus controllers section. vid 346d pid 5678 best
: If the drive is not detected or won't format, you can use the Windows Diskpart command to "clean" the drive and create a new primary partition.
Every USB peripheral relies on a Vendor ID (VID) and Product ID (PID) assigned via firmware to communicate its hardware capabilities to the operating system. inside was struggling
The single best utility to fix a broken VID 346D PID 5678 drive is the software (specifically versions calibrated for the FC1178BC chip).
According to user reports, these drives often provide transfer speeds of around 19MB/s Read and 6.5MB/s Write , which is typical for budget USB 2.0 hardware. | | Windows says "Best driver already installed"
The hardware identifiers point directly to a mass storage controller manufactured by Shenzhen SanDiYiXin Electronic Co., LTD , often distributed globally under generic labels like "VendorCo Disk 2.0" .
Based on community benchmarks from NirSoft's USB Speed Database , users typically see sequential read speeds around 15–30 MB/sec and write speeds between 5–15 MB/sec . Performance can drop significantly when transferring multiple small files.
When people search for the VID 346D PID 5678 best , they are generally trying to identify the capabilities of the USB drive they are holding and determine if it suits their needs.