USB - Serial Port (COM4) Driver

The USB – Serial Port (COM4) driver enables Windows to communicate with Newport equipment through a USB-based serial connection. It is intended for users setting up the device for the first time, restoring a missing COM port, or troubleshooting software that cannot detect connected equipment.

Key Features

• Provides a serial-port interface over USB so compatible applications can communicate with connected Newport equipment.
• Allows Windows to recognize the device as a COM port, which you can check and configure in Device Manager.
• Supports setup on Windows 10, 8.1, 7, Vista, and XP when you select the appropriate driver package for your system.
• Can help resolve recognition problems caused by a missing or incompatible driver, allowing compatible control or communication software to access the device.

How to Install USB – Serial Port (COM4) Driver

1. Check your device and Windows version. Confirm that the connected equipment is from Newport and check whether your operating system is 32-bit or 64-bit. For Windows 10/11 systems, note that Windows 10 is listed as supported; Windows 11 compatibility should be confirmed with Newport before installation.
2. Choose the matching package. Before starting your USB – Serial Port (COM4) driver download for Windows, verify that the package matches your hardware and operating system. Select the latest version that explicitly supports both, rather than assuming the newest release supports older Windows editions.
3. Download and review the files. Use a trusted source for a free download, then extract the archive if necessary. Read any included installation instructions, especially guidance about when to connect the device.
4. Install the driver. Run the supplied installer, if available. Alternatively, open Device Manager, locate the unrecognized device or serial-port entry, choose Update driver, and browse to the extracted driver folder.
5. Verify the connection. Reconnect the equipment if instructed and restart Windows if prompted. Check under Ports (COM & LPT) in Device Manager, then select the assigned COM port in your application. Windows may assign a number other than COM4.

Keep the driver updated when Newport provides a compatible release that addresses a problem or improves support for your setup. Before you update a working installation, review the package notes and retain the previous installer in case you need to restore it.