The is a versatile PCIe-to-Multi-I/O chipset widely used in expansion cards to add serial (RS232) and parallel (LPT) ports to modern computers. In Windows 10, it is generally regarded as a "plug-and-play" solution when using the official Nanjing Qinheng Microelectronics (WCH) drivers. Performance and Compatibility
Right-click the Windows and select Device Manager . Scroll down and expand the Ports (COM & LPT) section. Look for the newly assigned ports, typically labeled as: WCH PCI Express => Dual Serial Port (COM3 & COM4) WCH PCI Express => Parallel Port (LPT1)
A: Yes, the same CH382L driver for Windows 10 (x64) works on Windows 11 with identical installation steps.
If you need to add legacy serial (RS-232) or parallel (LPT) ports to a modern PC, chances are you’ve encountered a PCIe expansion card based on the chip. This chip is the heart of many budget-friendly PCI Express serial and parallel port cards, making them accessible for connecting older printers, industrial equipment, and more. However, Windows 10 and 11 do not include native inbox drivers for the CH382L series. This guide will walk you through everything you need to know to get your device working perfectly. wch ch382l driver windows 10
To ensure that your legacy equipment can communicate with the PC, you must confirm that Windows 10 assigns valid port numbers to the card. Open ( Windows Key + X > Device Manager ). Expand the Ports (COM & LPT) section. You should see new entries listed, such as: WCH PCI Express => Dual Serial Port (COM3) WCH PCI Express => Dual Serial Port (COM4) WCH PCI Express => Parallel Port (LPT1)
The installer will copy the necessary files. A pop-up will notify you when the installation is successful. Click OK .
: Download the latest WHQL-certified driver directly from the WCH website. If you must use an older industrial driver, you will need to disable Driver Signature Enforcement through the Advanced Startup menu of Windows 10. 2. Device Unrecognized / Yellow Exclamation Mark The is a versatile PCIe-to-Multi-I/O chipset widely used
Installing the is not plug-and-play, but by following this guide, you can overcome driver signature issues and legacy compatibility barriers. The key steps are:
If Device Manager shows nothing—not even a "PCI Serial Port" with an error—the issue is likely hardware-related.
Interfacing with legacy serial devices (modems, serial terminals). Adding a parallel port for older CNC machines or printers. 2. Downloading the WCH CH382L Driver for Windows 10 Scroll down and expand the Ports (COM & LPT) section
This article provides a definitive, step-by-step guide to successfully installing the , troubleshooting common errors, and verifying full functionality.
: The card allows for selection of standard I/O port addresses (like 0x378 for LPT) even in modern environments, which is essential for legacy industrial software. Verdict CH38XDRV.ZIP - Nanjing Qinheng Microelectronics Co., Ltd.