USB Flash Drive Speed Tests - VID = 346d, PID = 5678 - NirSoft
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.
If Windows lists the device as an "Unknown Device", do not look for custom third-party drivers. The VID 346D PID 5678 device depends entirely on the operating system's native . HDD GURU FORUMS • View topic - FirstChip FC2279 BA7
Understanding the VID 346D PID 5678 USB Device Error: A Troubleshooting Guide vid 346d pid 5678
Primarily uses the FirstChip FC1178BC or FC1179 controller.
user wants a long article for the keyword "vid 346d pid 5678". This appears to be a product code or identifier. I need to conduct multiple searches to gather comprehensive information. I'll start with general searches to understand the context. search results show that "vid 346d pid 5678" is a USB device identifier. It's often associated with Teclast CoolFlash drives, but also appears with other brands. There are discussions about speed, formatting issues, and a teardown. I need to gather more details. I'll open some of the relevant links. opened pages provide a lot of information. The device is a USB flash drive, often with VID 346D and PID 5678, associated with brands like Teclast, Smartbuy, VendorCo, etc. It seems to be a common identifier for mass-produced flash drives, possibly using FirstChip controllers. There are discussions about speed, capacity issues (counterfeit), and teardowns. I need to structure a long article. The outline will cover: decoding VID/PID, common brands, known issues (performance, counterfeit capacity, reliability, OS detection), and a summary. I'll also search for more details on counterfeit issues and warranty. search results provide additional context. There are discussions about counterfeit drives, tools like ChipGenius, and the FirstChip controller. I'll also search for "VendorCo ProductCode" to understand the generic identifier. have gathered sufficient information. The article will cover the technical significance of VID/PID, common brands, performance analysis, common issues, detection and recovery, warranty, and a summary. I will cite sources from the search results. identifier represents one of the most widely used and controversial "generic signatures" in the world of USB flash drives. While it may seem like a random string of numbers, it serves as a digital fingerprint for a massive category of budget and promotional flash drives found globally. This article delves deep into what this VID and PID combination signifies, the hardware behind it, its real-world performance, common problems like counterfeit capacities, how to manage it on Linux or Windows, and how to potentially restore it using professional tools.
Shenzhen Feitian is famous for manufacturing and Smart Cards . If you work in a corporate environment, banking, or government, this device might be a Two-Factor Authentication (2FA) token. It could be a generic Feitian ePass token or an OEM version of a security key used for VPN access or digital signatures. USB Flash Drive Speed Tests - VID =
Because these drives utilize highly cost-optimized FirstChip microcontrollers, they are susceptible to data corruption, write-protection lockouts, or sudden volume loss (showing 0 bytes or unrecognized partition errors). Step 1: Query Internal Hardware Identifiers
If you are dealing with a broader slow-transfer scenario on a system-wide level, verify your OS optimization parameters by utilizing Guiding Tech's USB Speed Fix Walkthrough to toggle Windows drive caching policies.
Rule out a faulty port on your computer before blaming the device. If Windows lists the device as an "Unknown
A 16-bit number assigned by the USB Implementers Forum (USB-IF) to a specific manufacturing company. Each vendor gets a unique ID.
While the "VendorCo" branding often appears in system logs for these devices, the internal hardware varies significantly: Shenzhen SanDiYiXin Electronic Co., LTD (VID: 0x346D). Common Controller Chips: Often utilizes (e.g., FC1178BC) or (e.g., YC2019) controllers. Typical Protocol: Most versions operate on USB 3.0/3.2 Gen 1 protocols, despite sometimes being marketed as faster. Standard Performance: USB 2.0 variants: Typically achieve read speeds of ~15–30 MB/s and write speeds of ~4–12 MB/s USB 3.0 variants: Can reach read speeds between ~80–140 MB/s , with write speeds ranging widely from ~6–60 MB/s depending on the specific NAND flash used. Key Observations & Optimization File System Impact:
A four-digit hexadecimal number assigned by the manufacturer to identify the specific product model.
What (e.g., camera, programmer, adapter) Any error codes shown in your Device Manager