Wch Ch382l Driver Windows 10 May 2026

After install, check driver file: ch382.sys → Properties → Details → version ≥ 3.8.2021 for full Win10 64-bit compatibility.

If passing the CH382L to a Hyper-V or VMware VM, use PCI passthrough (discrete device assignment). For Hyper-V, the host driver must be removed, and the VM must have the WCH driver installed inside.

WCH CH382L is a dual-interface chip supporting both PCI-Express to dual serial ports and a printer port. For Windows 10, installing the correct driver is essential to ensure the hardware is recognized as a high-speed communication port. Driver Installation Guide for Windows 10 To get your CH382L card up and running, follow these steps: Official Driver Source : The most reliable driver is the CH38X series driver provided by WCH (Nanjing Qinheng Microelectronics)

. This package supports Windows 11, 10, 8, and 7 for both 32-bit and 64-bit systems. Automated Setup : Download the CH38XDRV.EXE wch ch382l driver windows 10

installer. Running this executable will automatically detect the PCIe card and install the necessary files for the serial (COM) and parallel (LPT) ports. Manual Verification Device Manager (right-click the Start button). Look under Ports (COM & LPT)

You should see "WCH PCI Express => Serial Port" and/or "WCH PCI Express => Parallel Port" without any yellow warning triangles. Performance Tuning

: If you are using the card for industrial equipment or specialized legacy hardware, you can right-click the port in Device Manager, go to Properties > Port Settings > Advanced After install, check driver file: ch382

, and adjust the FIFO buffers or COM port number if a specific range is required. Technical Specifications : PCIe x1 (compatible with x4, x8, x16 slots). : Supports communication baud rates up to 8Mbps. Functionality

: Usually provides 2-channel serial ports (RS232) or 1-channel parallel port (EPP/ECP). for a specific piece of software?

The prompt "wch ch382l driver windows 10" is typically a technical search query, not a story title. However, since you requested a story, I have written a fictional narrative centered around the very real frustration of finding this specific, obscure driver. While Windows 10 includes native drivers for many

While Windows 10 includes native drivers for many generic serial controllers, the CH382L operates as a PCIe-to-serial bridge with custom memory mapping and interrupt handling. Microsoft’s inbox serenum.sys and serial.sys drivers may partially recognize the device, but full functionality—especially for advanced baud rates, hardware flow control, and dual-port operation—requires the official WCH driver package.

Without the correct driver, the device may:

| Issue | Solution | |--------|----------| | “Driver not signed” | Disable driver signature enforcement (see step 3.1) | | COM port not working | Change COM port number in Device Manager → Port Settings → Advanced | | Device disappears after reboot | Disable Windows 10 fast startup (Power Options → Choose what power buttons do) | | Conflict with USB 3.0 | Try USB 2.0 port (CH382 is USB 2.0 compliant but some USB 3.0 hubs cause issues) |

The CH382L uses memory-mapped I/O, not traditional ISA-style I/O ports. Some legacy software (like old DOS-based parallel programmers) assumes direct I/O port access (0x378, 0x278). You may need UserPort, GiveIO, or InpOut32 to grant access. However, modern Windows 10 security blocks this. Consider running such software in a Windows XP virtual machine with PCIe passthrough.

| Problem | Solution | |---------|----------| | Driver signature error | Use latest driver (v3.8+). Or temporarily disable driver signature enforcement (for testing). | | Code 10 – device cannot start | Uninstall driver → delete C:\Windows\System32\drivers\ch382.sys → reinstall with admin rights. | | Parallel port not detected | Check BIOS → ensure PCIe slot is enabled. Try different slot. | | Installer fails to run | Run as Admin + disable antivirus temporarily. |