The official driver for the WCH CH382L chipset (PCI Express to Dual Serial and Parallel Port) is the CH38XDRV package. This driver is developed by Nanjing Qinheng Microelectronics (WCH) and supports both the serial and parallel port functions of the CH382, CH382L, and CH384 chips. ⬇️ Driver Download & Official Links Official Windows Driver (EXE): CH38XDRV.EXE (WCH-IC) Size: ~5.85 MB Version: 1.5 (or latest available)

Navigate to the folder where you extracted the WCH drivers and select the

Official Windows Driver (CH38XDRV.EXE): Download from WCH-IC.com Version: 1.5 (or latest available)

• Hover over "Products" (产品) -> Select "Interface" (接口).
• Find "CH382" in the list or search for "CH382" in the search bar.

The CH382L chipset facilitates high-speed data transmission by bridging the PCIe bus to legacy interfaces.

Parallel Port: 1 x DB25 female port supporting SPP, EPP, and ECP modes.

• Hold Shift and click "Restart."
• Navigate to Troubleshoot > Advanced Options > Startup Settings > Restart.
• Press F7 to select "Disable driver signature enforcement."
• Install the driver again.

The most reliable source for drivers is the official manufacturer. For the CH382L chipset, use the following official download:

1. Right-click Start → Device Manager.
2. Find the unknown "PCI Device" under "Other devices".
3. Right-click → Update driver → Browse my computer for drivers.
4. Click "Let me pick from a list of available drivers on my computer".
5. Click "Have Disk" → Browse to your extracted driver folder.
6. Select the .INF file (e.g., CH38X.INF).
7. Choose "WCH CH382L Parallel Port" from the list.
8. Ignore any "Windows cannot verify the publisher" warning – click "Install anyway".
9. After installation, the device appears under "Ports (COM & LPT)" as "WCH CH382L PCI Express Parallel Port (LPT1)".

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