There are two primary ways to obtain the correct driver: from the manufacturer's website or via Windows Update.

Wait for the confirmation dialog stating "Driver installation success" or "Installation complete." Restart your computer to finalize the system integration. Step 3: Manual Installation via Device Manager

: The installation process stalls or Windows returns an error.

The driver package for this device is the installer. It is fully compatible with both 32-bit and 64-bit versions of Windows 10 , as well as Windows 11 and older legacy systems. Manufacturer: Nanjing Qinheng Microelectronics (WCH) Official Download Page: WCH-IC CH38X Driver Download Driver Version: 1.5 (or higher)

If your legacy software cannot communicate with the device, double-click the newly created Serial or Parallel port in Device Manager, navigate to Port Settings -> Advanced , and manually change the COM or LPT port number to a vacant designation required by your specific application.

Finding the correct driver for legacy or specialized hardware can be challenging. The identification string typically points to multi-I/O controller cards, often used to add serial (COM) and parallel (LPT) ports to modern desktop computers via a PCI Express (PCIe) slot. These expansion cards commonly rely on controllers manufactured by WCH (Jiangsu Qinheng Co., Ltd.), such as the CH382 or CH384 chips.

Finding the correct driver for the CH382SSP-1107 (often part of the

Navigate to the folder where you extracted the WCH files and click Verification: Once installed, the ports should appear under the "Ports (COM & LPT)" section in Device Manager. StarTech.com Common Troubleshooting Error Code 28: