Users have reported a slight performance increase (up to 19 MB/s read) when formatting the drive with the exFAT file system instead of the default FAT32. Maintenance and Repair
These drives are generally or "low-end" USB 3.0. Speed tests typically show: Write Speed: 3 MB/s to 8 MB/s Read Speed: 10 MB/s to 20 MB/s If you'd like to troubleshoot further, let me know:
The PID 5678 identifier is heavily recycled by rogue assembly lines specializing in "hacked" firmware drives. If you purchased a 1TB or 2TB flash drive online for a suspiciously low price and its hardware ID reads VID 346d PID 5678 , it is highly likely a . The firmware has been altered to report a false capacity to your computer, causing it to overwrite old data and corrupt your files as soon as you pass its true physical limits.
For Linux users, this discovery is crucial. If you own a drive matching this VID/PID , it is highly advisable to avoid using it with the ext4 file system for critical data backups.
If you can tell me: What the device looks like (e.g., a dongle, a cable) What you're trying to connect it to The operating system (Windows 10/11, Linux, macOS)
When the reseller goes out of business, or if you lost the driver CD, you are left with a generic device ID and no software.
Use a tool like ChipGenius to confirm the exact controller and Flash ID (FID).
Most models utilize Hynix or similar TLC (Triple-Level Cell) single-channel NAND memory components. Troubleshooting Common Problems
If your computer cannot access the drive or it shows as "Unrecognized":
: Usually between 15 MB/s and 30 MB/s for USB 2.0 versions.
. This specific hardware profile is associated with budget-tier, highly compact "chip-on-board" USB 2.0 flash drives. This document outlines the hardware specifications, performance benchmarks, and deployment use cases for system administrators and hardware forensic analysts. 1. Hardware Identification
The identifier VID 346D PID 5678 refers to a common generic USB storage device, typically manufactured by Shenzhen SanDiYiXin Electronic Co., LTD
Click the in the top left corner and select About This Mac . Click on System Report . Under the Hardware section, click on USB .
