The CH382L chipset is a PCIe-to-serial/parallel bus converter. You can find the latest Microsoft WHQL certified drivers directly on the WCH official site. Filename: CH38XDRV.EXE Compatibility: Windows 10/11 (both 32 and 64-bit). 2. Installation Steps
Automatic Setup: Run the CH38XDRV.EXE installer and click Install. Once finished, Windows should automatically assign COM or LPT port numbers to your hardware.
Manual Update: If the installer doesn't do the trick, open Device Manager, right-click the problematic "PCI Serial Port," select Update Driver, and point it to the folder where you extracted the driver files. 3. Troubleshooting Tips
Missing INF Error: Some users report errors where a "required entry is missing." This often happens if Windows tries to use an older driver intended for legacy OS versions. Using the latest CH38X package typically resolves this.
Hardware Check: Ensure the card is firmly seated in the PCIe slot. Some cards, like those from Delock, include low-profile brackets for mini-PCs, so make sure you’re using the correct physical configuration for your case.
Legacy Hardware: If you have an older PCI (non-Express) card, you might need the CH35XDRV.EXE package instead. CH38XDRV.EXE - Nanjing Qinheng Microelectronics Co., Ltd.
The WCH CH382L is a high-performance PCI-Express (PCIe) bus expansion chip designed by Nanjing Qinheng Microelectronics (WCH). It is primarily used in expansion cards to add high-speed serial (RS-232) and parallel (LPT) ports to modern computers. WCH CH382L Driver for Windows 10
For users running Windows 10 (both 32-bit and 64-bit), obtaining the correct driver is essential for the expansion card to be recognized as a valid COM or LPT port.
Official Driver Package: The primary driver for this chipset is the CH38XDRV.ZIP (or .EXE) package.
Compatibility: This package officially supports Windows 10, as well as Windows 11, 8.1, 7, and various Windows Server editions.
WHQL Certification: The driver is Microsoft WHQL certified, ensuring a stable installation process on Windows systems. Where to Download wch ch382l driver windows 10
It is highly recommended to download the driver directly from the manufacturer to avoid malware or outdated versions: Official Download Page: WCH CH38X Driver Download
Alternative Support: Some third-party vendors like Delock or Add-on Cards provide branded versions of these drivers on their respective product pages. Installation Guide for Windows 10
Extract the Files: Download the CH38XDRV.ZIP file and extract its contents to a folder on your PC.
Run the Installer: Locate the CH38XDRV.EXE file. Right-click it and select "Run as administrator" to ensure it has the necessary permissions to modify system drivers.
Automatic Setup: Click the Install button in the setup window. The utility will automatically detect the PCIe card and install the required serial or parallel port drivers. Verify in Device Manager: Press Windows Key + X and select Device Manager.
Look under Ports (COM & LPT). You should see "WCH PCI Express => SERIAL" or "WCH PCI Express => PARALLEL" listed with assigned port numbers (e.g., COM3). Key Features & Specifications
The CH382L chip is favored for industrial and commercial applications due to its stability and high data throughput. CH38XDRV.ZIP - Nanjing Qinheng Microelectronics Co., Ltd.
CH382SER.EXE (or SETUP.EXE inside the ZIP) from WCH.ch38x.sys (kernel driver)ch38x64.sys (x64 version)serenum.sys, serial.sys (Microsoft helpers)PCI Express to 2S (CH382L) - COM3PCI Express to 2S (CH382L) - COM4
(COM numbers may vary based on existing devices.)The WCH CH382L is a USB-to-parallel/parallel-like interface IC (commonly used on some USB-to-serial/parallel adapters). Windows needs a compatible driver to recognize devices using the CH382L.
http://www.wch.cnArticle last updated: October 2025. Information accurate for Windows 10 versions 20H2 through 22H2 and Windows 11.
Guide: Installing WCH CH382L Drivers on Windows 10 The WCH CH382L is a common PCIe-to-serial/parallel port chipset used in many multi-I/O expansion cards. To get these ports working correctly on Windows 10, you must install the official manufacturer drivers. 1. Download the Official Driver Temporary Disable (For one boot session – easiest)
For the CH382L chipset, you need the CH38XDRV package. This driver is WHQL certified and supports both 32-bit and 64-bit versions of Windows 10 and 11.
Official Source: Download the CH38XDRV.EXE installer from the WCH (Nanjing Qinheng Microelectronics) website.
Alternative Format: If you prefer a compressed file for manual installation, use the CH38XDRV.ZIP version. 2. Installation Steps Once downloaded, follow these steps to install the driver:
Run the Installer: Right-click the CH38XDRV.EXE file and select Run as Administrator.
Select Install: In the installation window, click the Install or Update button. The utility will automatically scan for the PCIe card and apply the necessary drivers. Verify in Device Manager: Right-click the Start button and select Device Manager.
Look under Ports (COM & LPT). You should see "WCH PCI Express => Serial Port" or similar entries.
If the device still appears as an "Unknown Device" or "PCI Serial Port" under "Other devices," right-click it, select Update driver, and choose Search automatically or browse to the folder where you extracted the ZIP version. 3. Troubleshooting Common Issues CH38XDRV.EXE - Nanjing Qinheng Microelectronics Co., Ltd.
How to Install WCH CH382L Drivers on Windows 10: A Complete Guide
If you've just added a PCIe card to your PC for extra serial or parallel ports, you likely noticed it uses the WCH CH382L
chipset. Getting these legacy-style ports to talk to modern Windows 10 can sometimes be a headache if you don't have the right driver. Hold Shift while clicking Restart from the Start menu
This guide will walk you through downloading and installing the official drivers to get your COM and LPT ports up and running in minutes. 1. Download the Official WCH CH382L Driver
The first step is obtaining the correct software package. While Windows Update might occasionally find a basic driver, it’s best to use the official utility from Nanjing Qinheng Microelectronics (WCH)
to ensure full feature support (like hardware flow control). Official Download: CH38XDRV.EXE (WCH-IC.COM) File Details: CH38XDRV.EXE
package supports both 32-bit and 64-bit versions of Windows 10/11 and is Microsoft WHQL Certified. Compatibility:
This driver works for CH382 (Dual Serial + Parallel) and CH384 cards. 2. Step-by-Step Installation Process
Once you have downloaded the file, follow these steps to install it: Extract the Files: If you downloaded a version, right-click it and select Extract All . If you have the , simply double-click to run it. Run the Installer: CH38XDRV.EXE Click Install: A dialog box titled DriverSetup will appear. Click the Wait for Success:
You should see a pop-up window confirming "Driver installation success" once finished. Click to close it. Restart Your PC:
It is highly recommended to restart your computer to ensure the system correctly initializes the new PCIe hardware. 3. Verify the Installation in Device Manager
To make sure Windows sees your new ports, follow these steps: Right-click the button and select Device Manager Expand the Ports (COM & LPT) You should see your new entries, typically labeled as WCH PCI Express > Dual Serial Port (COMx) WCH PCI Express > Parallel Port (LPTx)
If there is a yellow exclamation mark, right-click the entry, select Update Driver
, and point it to the folder where you extracted the official files. 4. Troubleshooting Common Issues CH38XDRV.EXE - Nanjing Qinheng Microelectronics Co., Ltd.
The CH382L is a PCI Express bridge chip that converts one PCIe lane into two independent high-speed asynchronous serial ports. Key specifications include: