Introduction: What is the WCH CH382L? The WCH CH382L is a high-speed, dual-port parallel interface chip manufactured by Nanjing Qinheng Microelectronics (WCH). It is commonly found on PCIe (PCI Express) to LPT (Parallel Port) adapter cards, allowing modern motherboards without legacy parallel ports to communicate with older printers, CNC machines, industrial controllers, EPROM programmers, and dongle-based software.
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). wch ch382l driver windows 10
Bookmark this article and keep a copy of the working driver on a USB drive – Windows updates may occasionally revert or break the installation. Last updated: October 2025 – Tested on Windows 10 22H2 (Build 19045) and Windows 11 23H2. Introduction: What is the WCH CH382L
A: Yes, but you may need to manually assign I/O ranges via registry editing. Windows 10 supports up to 3 parallel port devices. A: Many real-time CNC applications require direct port I/O
Disclaimer: Always back up your system before installing unsigned hardware drivers.