If you know the device is a webcam or a specific brand component, go directly to the manufacturer's website (e.g., Logitech, Microsoft, or the laptop brand like Dell/HP).
Q: Is the CB31005 driver compatible with Windows 11 in 2021? A: Yes, but only the September 2021 patch (version 3.8). Earlier 2021 drivers cause a blue screen (BSOD) on Windows 11 build 22000.
Q: Why does my antivirus flag the 2021 CB31005 driver?
A: Older CH340 drivers use an unusual packed executable format. This is a false positive. However, always hash-check the file. The official 2021 SHA256 for CH341SER.EXE is a4f2c8d... (Verify on WCH’s site).
Q: Can I use a 2021 driver on Windows XP? A: No. The 2021 installers dropped XP support. You need the archived 2014 driver (v2.1). cb31005 driver download 2021
Warning: Do not download from "driver updater" pop-up ads. These are almost always malware disguised as CB31005 drivers.
If you are not on Windows, the CB31005 driver situation in 2021 was simpler:
Linux (Kernel 5.4+): The device works out-of-the-box with the ch341 kernel module. No download required. To test: If you know the device is a webcam
lsmod | grep ch341
sudo modprobe ch341
macOS Big Sur / Monterey (2021): Apple removed built-in support for many legacy USB-serial chips. You need the open-source SiLabs or WCH kext. Use Homebrew:
brew install wch-ch34x-driver
Note: You must disable SIP (System Integrity Protection) temporarily.
Before you download any driver, you must understand what "CB31005" actually refers to. In 2021, this string typically appeared under "Other Devices" in Windows Device Manager with a yellow exclamation mark. If you are not on Windows, the CB31005
Common hardware mappings for CB31005 include:
To confirm your device:
A: Because the driver modifies kernel-level display settings. As long as you downloaded from a legitimate source (GitHub, Fresco Logic), it is a false positive. However, if you downloaded from a random "driver download" site, delete it immediately.
The CB31005 does not use a traditional "driver" to function; it uses Configuration Software to tell the board how to behave. In 2021, the standard software used was "Kincony KC868-A4 Manager" or "ETimer".
Key Features of the Configuration Software: