: Increase the software receive buffer size if you are monitoring heavy bus loads to prevent frame loss. To help narrow down your setup, tell me:

: If you are using a compatible analyzer, you can find integrated drivers and software like Waveshare Wiki or through the ZLG CANPro Guide Core Technical Features Help with ZLG USBCAN-II Driver for Jetson (arm64/aarch64)

If you purchased your ZLG USB-CAN II from an authorized reseller, such as a store on Taobao or JD.com, you can also request the driver directly from them. By providing your purchase link or a photo of the device model, the seller can send you a verified driver download link, typically from a trusted cloud service. This method can be a quick and convenient backup option.

1. Error: "Windows cannot verify the digital signature for the drivers required for this device" (Code 52)

Do you need (Python, C#, C++) for your development work?

Avoid downloading drivers from third-party "file locker" sites. These are often unverified and may contain malware. Always prioritize the "High Quality" and "Verified" source: the manufacturer.

The ZLG USBCAN-II driver for Linux is implemented based on the library, a userspace library for USB device access. You must install this dependency first. On Debian/Ubuntu systems, use the following command:

Download the file from a verified source. Extract the files to a known location on your computer. 2. Run the Installer

ZLG distributes its verified drivers alongside its proprietary analysis software, .

If you encounter any specific errors during installation, feel free to leave a comment below with a screenshot, and we will help you troubleshoot.

Locate the unrecognized device. It usually appears with a yellow exclamation mark under as USB-CAN or Unknown Device . Step 3: Manually Point to the Driver Right-click the target device and select Update driver . Choose Browse my computer for drivers .

The safest source is the official Guangzhou ZLG Electronics website. Navigate to the official ZLG Support and Download center. Search for or CAN-bus Interface Adapter Driver .