If your USB to Serial device isn’t showing up or working properly on Windows, you probably need to install or update the Active USB-COM Port Driver. This driver enables your system to communicate with serial-based devices like Arduino boards, modems, GPS modules, and more via a USB cable.
In this article, you’ll learn what the Active USB-COM Port Driver is, how to download and install it step by step, and how to fix common connection errors.
🔹 What Is Active USB-COM Port Driver?
The Active USB-COM Port Driver is a Windows driver that lets USB devices function as traditional COM ports.
It’s mainly used for communication with serial devices (RS232, RS485) through a USB interface.
Without it, your PC won’t recognize your device, and you’ll often see errors like:
“USB Serial Port Not Detected”
or
“Driver Not Installed Properly”
🔹 Step 1: Download the Latest Version
You can download the latest official driver from the manufacturer’s page:
👉 Official Download Link (Active USB-COM Port Driver):
Go To Download Button
Or, if you are using Windows 10 / 11 (64-bit), here’s the direct installer link:
🔗 Active USB-COM Port Driver v2.2.2.0 or later
🔹 Step 2: Install the Driver (Windows 10 / 11)
-
Download the
.zipor.exefile. -
Extract it using WinRAR or 7-Zip (if zipped).
-
Right-click on
setup.exe→ click Run as administrator. -
Follow the on-screen instructions to complete the installation.
-
Once done, restart your computer.
🔹 Step 3: Verify the Installation
After restarting:
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Open Device Manager (Right-click Start → Device Manager).
-
Expand Ports (COM & LPT).
-
You should see something like:
If it appears without a yellow warning sign, your driver is installed successfully. 🎉
🔹 Step 4: Fix Common Issues
If your device still isn’t detected:
-
🔁 Try another USB port or different cable.
-
💡 Uninstall the old driver version before reinstalling.
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🧰 Make sure Windows Update is disabled during manual driver installation.
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⚙️ Reassign a COM port number:
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Open Device Manager
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Right-click on your USB COM Port → Properties → Port Settings → Advanced
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Change COM Port Number to a new one (e.g., COM3 or COM5)
-
🔹 Key Features
✅ Supports both 32-bit and 64-bit Windows (10 / 11 / 8 / 7)
✅ Stable communication between USB and serial devices
✅ Compatible with Arduino, GPS, modems, and industrial equipment
✅ Plug-and-play after installation
✅ Easy to update and uninstall
🔹 Perfect For
💻 Hardware engineers testing serial devices
⚙️ Arduino & microcontroller developers
📡 GPS, modem, and serial communication users
🔧 Tech enthusiasts working with USB-based COM ports
🔹 FAQ (Frequently Asked Questions)
Q1: What is the use of the Active USB-COM Port Driver?
It allows your PC to recognize USB-to-serial adapters and communicate with them as traditional COM ports.
Q2: Is it compatible with Windows 11?
✅ Yes! The latest version (v2.2.2.0 and above) fully supports Windows 10 and 11 (both 32-bit and 64-bit).
Q3: My device still doesn’t show up after installation — what should I do?
Try unplugging and reconnecting your USB device, using a different port, or restarting your computer. Also, ensure that the driver architecture matches your Windows version (32-bit vs 64-bit).
Q4: Can I use this driver for Arduino or GPS modules?
Yes! This driver works with most Arduino boards, GPS receivers, and other serial devices.
Q5: Where can I check the COM port number assigned?
Go to Device Manager → Ports (COM & LPT), and you’ll see your device listed with its assigned COM number (e.g., COM4).
Download
Active USB-COM Port Driver｜QB series
📥 Download