This driver download is available for Windows PCs.
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At a Glance
DeviceMiniCSU-3 USB Serial Port (COM18)
VendorRtp
Supported OSWindows 10, 8.1, 7, Vista, XP
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The MiniCSU-3 USB Serial Port (COM18) driver enables Windows to communicate with the Rtp device through a virtual serial port over USB. It is needed when setting up the device for the first time, restoring a missing COM port, or troubleshooting a connection that your serial communication software cannot detect.
Key Features
- USB-to-serial communication: Provides the driver interface needed for compatible applications to exchange data with the connected device.
- COM port access: Allows Windows to expose the device as a serial port that you can select in your communication software. Although this device is listed as COM18, Windows may assign a different port number.
- Windows compatibility: Listed supported systems include Windows 10, Windows 8.1, Windows 7, Windows Vista, and Windows XP. Choose a package that matches your operating system and architecture.
- Device recognition: Installing the correct driver can help resolve an unrecognized device or a missing serial-port entry when the cause is a missing or incompatible driver.
How to Install MiniCSU-3 USB Serial Port (COM18) Driver
- Check your system. Confirm your Windows edition and whether it is 32-bit or 64-bit. For Windows 10/11 users, note that Windows 10 is listed as supported, but Windows 11 compatibility is not confirmed.
- Choose the appropriate package. Before starting your MiniCSU-3 USB Serial Port (COM18) driver download for Windows, verify the package’s source, supported systems, and device match. If choosing a free download, use a trusted source and avoid unrelated bundled software.
- Prepare the files. Extract the downloaded archive if necessary. Read any included instructions, particularly guidance on when to connect the USB device.
- Install the driver. Run the supplied installer if available. Otherwise, open Device Manager, locate the connected device, select Update driver, and browse to the extracted driver folder.
- Verify the connection. Restart if prompted, then check Device Manager under Ports (COM & LPT). Select the assigned COM port in your application and use the serial settings required by your equipment.
Keep the driver updated when a compatible release addresses a connection issue or supports a system change. Before you update, compare the installed driver with the latest version offered by a trusted source, and confirm that it supports your specific device and Windows edition.
Driver Details
| Device | MiniCSU-3 USB Serial Port (COM18) |
|---|---|
| Vendor | Rtp |
| Category | USB |
| Supported OS | Windows 10, 8.1, 7, Vista, XP |
| Published | November 1, 2026 |
| Updated | November 2, 2026 |
This driver download is available for Windows PCs.