. Check the "Resources" tab in Device Manager to find the correct address for CNC software. Port Modes: This chip supports SPP, PS/2, EPP, and ECP CNC Issues:

The CH351Q parallel port driver is a necessary tool for anyone looking to utilize devices that connect via parallel ports on modern computers. While it may not offer the flashiest features or the most user-friendly interface, it fills an important niche.

The problem? It communicated via a 25-pin parallel port—a technology that modern computing had orphaned a decade ago.