Q: Is the CH382L driver compatible with Windows 11? A: Yes, Windows 11 shares the same driver model as Windows 10. The CH382L driver version 3.8+ works seamlessly on Windows 11.
Q: Can I use the CH382L on a laptop? A: Only if your laptop has an external PCIe slot (e.g., ExpressCard to PCIe adapter or Thunderbolt PCIe enclosure). The CH382L is a PCIe card, not a USB device.
Q: Why does my CH382L show as "CH384L" sometimes? A: The CH384L is a 4-port variant. Some drivers misidentify the chip. This is cosmetic and does not affect function. wch ch382l driver windows 10
Q: The driver installer says "Device not found" but the card is installed. A: Reseat the card. Check BIOS settings for PCIe native support. Disable "Legacy Serial Ports" in BIOS to free resources.
Q: Can I use this driver for CH382L on Linux?
A: No. Linux uses a different driver (ch34x.ko or mct_u232). This article is for Windows 10 only. Q: Is the CH382L driver compatible with Windows 11
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.
Q: Does the CH382L require an external power connector?
A: No, it draws power entirely from the PCIe slot. right-click the parallel port >
Q: Can I use two CH382L cards together for 4 LPT ports?
A: Yes, but you may need to manually assign I/O ranges via registry editing. Windows 10 supports up to 3 parallel port devices.
Q: My CNC software (Mach3, LinuxCNC, etc.) doesn’t see the port – why?
A: Many real-time CNC applications require direct port I/O. The CH382L uses memory-mapped I/O. You may need a different card (e.g., using PCIe-to-LPT based on NetMos 9865 or WCH CH353L).
Q: Does this driver work on Windows 11?
A: Yes, the same CH382L driver for Windows 10 (x64) works on Windows 11 with identical installation steps.
Q: Uninstalling the driver – how?
A: In Device Manager, right-click the parallel port > Uninstall > check “Delete driver software”. Also remove C:\Windows\System32\drivers\CH38X.sys.