Technical White Paper: CH382 Driver Implementation and Update Procedures 1. Executive Summary
is a high-performance PCI-Express bus interface chip designed by Nanjing Qinheng Microelectronics (WCH)
. It supports high-speed dual serial ports (UART) and a parallel port. This paper details the driver architecture, installation protocols, and update procedures necessary for maintaining system stability across modern and legacy operating systems. 2. Chipset Specifications
: PCI-Express x1 lane, compatible with x4, x8, and x16 slots. Dual UARTs
: Two independent asynchronous serial ports (compatible with 16C550). : Supports speeds from 50 bps to 8 Mbps. Parallel Port : Supports SPP, PS/2, EPP, and ECP modes. : 3.3V power supply with I/O voltage tolerance. 3. Driver Architecture & Compatibility
The driver package (CH38XDRV) is a unified installer that supports a wide range of architectures. Supported Operating Systems : Windows 11, 10, 8.1, and Server 2022/2019. : Windows 7, Vista, XP, and even 98/ME/NT4.0. Open Source
: Native support in Linux kernels with available manufacturer patches. Certification : Microsoft WHQL certified for driver signing and security. 4. Update and Installation Procedure
To ensure a clean "upd" (update) of the driver, follow these sequential steps: Step 1: Procurement of Official Files Download the latest CH38XDRV installation package
directly from the manufacturer to avoid malware or compatibility issues. Step 2: Driver Extraction and Preparation Uninstall any existing versions of the CH382 driver via the Device Manager CH38XDRV.EXE executable or unzip the CH38XDRV.ZIP
Ensure the PCIe card is physically seated in the motherboard slot. Step 3: Deployment : Click the "Install" button within the WCH setup utility.
: Use the "Update Driver" option in Windows Device Manager and point the search directory to the extracted driver folder containing the Step 4: Verification dh382 driver upd
After installation, the system should recognize the hardware as: CH382 - PCI to Dual Serial Port CH382 - PCI to Parallel Port (if applicable) 5. EEPROM Configuration Tool The driver package often includes an EEPROM Configuration Tool . This allows developers to: Modify Vendor IDs (VID) and Product IDs (PID). Adjust default baud rate offsets.
Customize power management settings for industrial applications. 6. Conclusion
The CH382 remains a critical component for industrial automation and legacy hardware support. Regular updates using the WHQL-certified CH38XDRV.ZIP
ensure continued compatibility with evolving Windows security protocols and hardware standards. Linux terminal commands for installing this driver or more details on the EEPROM configuration
You're looking for information on updating the DH382 driver. Here are some potential posts and solutions:
What is the DH382 driver? The DH382 driver is a software component that enables communication between a device ( likely a printer or scanner) and a computer. It's essential to have the latest driver version installed to ensure compatibility, performance, and security.
How to update the DH382 driver:
Common issues and solutions:
Additional resources:
typically refers to the ) chip, which is a high-performance PCI Express (PCIe) bus converter used in multi-port serial or parallel expansion cards. Nanjing Qinheng Microelectronics Co., Ltd. The "UPD" in your request likely stands for Universal Port Driver Universal Print Driver (if your card has a parallel port for a printer). Device Overview The CH382 chip is designed to convert PCIe lanes into: Nanjing Qinheng Microelectronics Co., Ltd. Dual UARTs (Serial/COM Ports) Manufacturer's Website : Visit the official website of
: Commonly used for legacy peripherals, industrial automation, and serial consoles. Parallel/Printer Port (LPT) : Used for legacy printers or hardware keys (dongles). Driver Update (CH38XDRV) The official driver package for this chipset is CH38XDRV.EXE . It supports a wide range of systems: Nanjing Qinheng Microelectronics Co., Ltd. Windows Support
: 32/64-bit Windows 11, 10, 8.1, 7, and older versions like XP/Vista/Server 2003-2022. Linux Support : Native drivers are often required for specific kernels. Certification
: The drivers are typically Microsoft WHQL certified for better stability on modern systems. Nanjing Qinheng Microelectronics Co., Ltd. Installation Steps : Obtain the latest CH38XDRV package from Nanjing Qinheng Microelectronics (WCH). Run Installer
: Launch the executable. It will automatically detect the PCIe card and install the necessary COM or LPT port drivers. Verify in Device Manager Right-click the menu and select Device Manager Look under Ports (COM & LPT)
. You should see "CH382 - Dual Serial Port" or similar entries. Troubleshooting : If the device shows as "Unknown," right-click it, select Update driver
, and point Windows to the folder where you extracted the driver files. Nanjing Qinheng Microelectronics Co., Ltd. Identifying Your Hardware ID
If you aren't sure if your card uses this chip, you can check its Hardware ID in Windows: Microsoft Learn Device Manager Properties Hardware Ids from the dropdown. For CH382, you will likely see a string containing VEN_1C00&DEV_3253 www.wch.cn specific version of the driver for a different operating system, such as CH38XDRV.ZIP - Nanjing Qinheng Microelectronics Co., Ltd.
Supports PCIE to Dual UARTs card, PCIE to printer/ parallel port card, Supports 32/64-bit Windows 11/10/8.1/8/7/VISTA/XP,SERVER Nanjing Qinheng Microelectronics Co., Ltd. Update drivers through Device Manager in Windows
Open Device Manager.
Right-click the malfunctioning DH382 device → Properties. Common issues and solutions:
Go to the Details tab.
In the Property dropdown, select Hardware Ids.
You will see a value like:
USB\VID_0BDA&PID_382APCI\VEN_10EC&DEV_3823Write this down.
In the world of PC hardware, few things are as frustrating as a malfunctioning component due to outdated or corrupted software. For users of devices labeled with the code DH382—whether it’s a network adapter, a USB controller, a Bluetooth dongle, or a specialized industrial interface—the search term "dh382 driver upd" is more than just a string of text. It is a cry for help, a mission to restore functionality, and a step toward peak system performance.
This article will serve as your complete manual. We will explore what the DH382 device is, why drivers are critical, how to properly perform a dh382 driver upd, and what to do when things go wrong. By the end, you will have the knowledge to keep your hardware running like new.
Q: Is dh382 driver upd free? A: Yes, absolutely. Drivers are provided free by Windows Update, Microsoft Catalog, or the chipset manufacturer. Never pay for a driver download.
Q: Can I update the driver on Linux or macOS?
A: Yes. On Linux, the driver is usually baked into the kernel (check with lsusb and dmesg). On macOS, use the manufacturer’s dedicated .pkg installer or trust the native AppleUSBEthernet driver.
Q: My DH382 device has no manufacturer name. How do I find drivers? A: Use the Hardware ID method described in section 4. That never fails.
Q: What if the update fails halfway through?
A: Use the “Device Manager > Action > Scan for hardware changes” to restart the detection. If still broken, run the sfc /scannow command (System File Checker) to repair corrupted Windows files.