VCI (Diagnostic Unit) Serial Port (COM12) Driver

The VCI (Diagnostic Unit) Serial Port (COM12) driver allows Windows to recognize the USB-connected Autocom diagnostic interface and communicate with it through a virtual serial port. It is needed by technicians and vehicle owners who use compatible diagnostic software and find that their VCI is missing, unrecognized, or unable to connect.

Key Features

• USB-to-serial communication: Provides the serial-port connection that compatible diagnostic software uses to exchange data with the Autocom VCI.
• Device recognition: Helps Windows identify the diagnostic interface correctly rather than leaving it listed as an unknown USB device.
• COM port configuration: Makes the assigned port available in Device Manager so you can match it to the connection settings in your diagnostic application. COM12 is a Windows-assigned port number and may differ between computers.
• Support for listed Windows systems: Intended for compatible configurations running Windows 10, 8.1, 7, Vista, or XP. Check the individual package for operating-system and architecture requirements.

How to Install VCI (Diagnostic Unit) Serial Port (COM12) Driver

1. Check your system and interface. Confirm your Windows version, whether it is 32-bit or 64-bit, and the exact Autocom VCI model. For Windows 10/11 systems, note that Windows 11 is not included in the supplied supported-OS list; do not assume compatibility.
2. Choose a matching package. Before starting your VCI (Diagnostic Unit) Serial Port (COM12) driver download for Windows, verify the source and compatibility information. If choosing a free download, use a trusted source and avoid packages that require unrelated software.
3. Install the driver. Close your diagnostic application, extract the downloaded archive if necessary, and follow the included setup instructions. Connect or disconnect the interface when prompted.
4. Check Device Manager. After installation, connect the VCI and look under “Ports (COM & LPT).” If Windows still cannot identify it, select “Update driver” and browse to the extracted driver folder.
5. Configure and test the connection. Select the assigned COM port in your diagnostic software, then test communication according to the interface instructions. Restart Windows if requested.

Keep the driver updated when a compatible release addresses connection problems or supports changes to your diagnostic software. Before you update, check that the latest version supports your specific interface and Windows installation, and retain the working installer in case you need to restore it.