: Used to identify the actual controller manufacturer and part number inside the casing. FirstChip MpTools
If your device is showing these IDs and isn't working correctly, you can use the following steps:
The tool should recognize the device, even if Windows doesn't, showing VID_FFFF PID_1201 and the controller part number. Configure Flash: Click on "Setting" or "Config."
If the MP Tool does not work, the flash memory might be too severely corrupted. usb device id vid ffff pid 1201 patched
Install the modified driver through Device Manager by selecting and pointing to your edited .inf file. Step 3: EEPROM Re-Flashing
If your USB drive does not show up automatically in one of the numbered slots, unplug it and plug it back into a native (avoid USB 3.0 ports or hubs, as they can interfere with low-level flashing protocols).
: This product ID points natively to generic mass storage profiles, most commonly associated with NAND USB2DISK storage configurations. : Used to identify the actual controller manufacturer
Without a patch, the OS will ignore the device, log unknown device , or reject it with device descriptor read/64, error -71 .
If the device stopped working after a Windows Update, an official driver likely blocked the chip. Bypassing this requires installing an older, "un-patched" driver version that does not check for counterfeit hardware. Open (Right-click Start > Device Manager).
In QEMU/KVM, the usb-tablet or usb-mouse device emulation can sometimes expose a dummy USB controller with VID FFFF PID 1201 . This is especially true when: Install the modified driver through Device Manager by
This is a common "patched" clone chip. Install the correct CH340 driver, ignore the weird VID, and it will work fine for most Arduino/serial tasks. Just don't use it for safety-critical or high-security applications.
Every USB device relies on two specific identification codes to tell the operating system what it is and which driver it needs:
Use utilities like ChipGenius or Flash Drive Information Extractor to pull deeper hardware details, specifically the "Controller" and "Flash ID".