DexCom USB/COM Port Driver (COM22) Driver

The DexCom USB/COM Port Driver (COM22) driver helps Windows recognize a compatible Dexcom device connected by USB and communicate with it through a virtual serial port. It is intended for users who need to connect their device to compatible Dexcom software or troubleshoot an unrecognized USB connection. The COM22 label identifies the port assigned by Windows, rather than a separate device model.

Key Features

• USB communication support: Provides the connection layer that compatible Dexcom software needs to communicate with a supported device.
• Virtual COM port access: Allows Windows to present the connected device as a serial port, which may appear as COM22 in Device Manager.
• Support for listed Windows versions: Intended for Windows 10, 8.1, 7, Vista, and XP, subject to the requirements of the specific driver package and device.
• Connection troubleshooting: Installing the correct driver may resolve missing-driver warnings or recognition problems caused by an absent or incompatible installation.

How to Install DexCom USB/COM Port Driver (COM22) Driver

1. Check your system and device. Confirm your Windows version, whether it is 32-bit or 64-bit, and your Dexcom device model. For Windows 10/11 systems, note that Windows 11 is not included in the listed supported operating systems; verify compatibility with Dexcom before proceeding.
2. Choose a trusted package. Before starting a DexCom USB/COM Port Driver (COM22) driver download for Windows, verify that the package matches your device and operating system. Look for the latest version compatible with your setup, and confirm the source even when it is offered as a free download.
3. Prepare the installation. Close any software using the device. Extract the downloaded files if necessary, and follow the package instructions about when to connect or disconnect the USB cable.
4. Install the driver. Run the supplied installer, if included. For a package intended for manual installation, open Device Manager, locate the device, choose Update driver, and browse to the extracted driver folder.
5. Verify the connection. Restart Windows if prompted, reconnect the device, and check Device Manager for warning icons. Open compatible Dexcom software to confirm recognition. The assigned COM number may differ from COM22.

Keep the driver updated when Dexcom provides a compatible release or recommends an update for a connection issue. Check the release notes before making changes, and avoid replacing a working driver with a package intended for a different device or Windows version.