Standard 32-bit PCI bus (compatible with PCI 2.2).
Open a terminal and run the following command to check if the kernel detects the PCI card: lspci -v | grep -A 8 -i "Nanjing" Use code with caution.
Right-click the entry, select , and check the Device status . It should read: "This device is working properly." 5. Advanced Configuration and Remapping I/O Addresses
MacOS dropped native parallel port support after 10.14 Mojave. However, the CH351Q can work with the open-source kext (not recommended for production). Most users find better results using a USB-to-parallel adapter or running Windows via Boot Camp.
If the port does not show up as /dev/lp0 , force-load the parallel port driver module: sudo modprobe parport_pc sudo modprobe ppdev Use code with caution. ch351q parallel port driver
The you are attempting to connect (e.g., CNC machine, laser engraver, legacy printer).
Comprehensive Guide to the CH351Q Parallel Port Driver: Installation, Troubleshooting, and Legacy Hardware Support
Getting the CH351Q parallel port card to work seamlessly requires installing the correct driver and configuring the operating system resources properly. This comprehensive guide covers driver downloads, step-by-step installation, resource mapping, and troubleshooting for Windows and Linux. 1. Technical Specifications of the CH351Q Chip
IEEE 1284 parallel port supporting SPP, EPP, and ECP modes. Standard 32-bit PCI bus (compatible with PCI 2
As of my last update, the stable version is (or later for Windows 11). The package includes:
The CH351Q is more than just a simple adapter; it is a highly integrated controller compliant with the .
The CH351Q acts as a translator. To the OS, it looks like a standard PCI device occupying a range of memory addresses. To the printer or CNC machine, it looks like a standard legacy LPT port living at the standard I/O addresses (like 0x378 ).
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. It should read: "This device is working properly
The parallel port mode mismatch between the printer and the CH351Q configuration.
Supports SPP, EPP, and ECP modes compatible with IEEE 1284.
Have a different CH35x chip (CH352, CH353)? This driver works for those too. Drop a comment if you got it working on Windows 11 23H2.