: If you are using old CNC software or DOS-based programs that require fixed addresses (
While USB-to-Parallel adapters exist, they introduce latency and complexity that breaks timing-sensitive applications (like EPP/ECP mode device programming). The CH351Q, sitting directly on the PCI bus, offers a level of direct control that USB can never match.
: Fully compatible with SPP (Standard Parallel Port), EPP (Enhanced Parallel Port), and ECP (Extended Capabilities Port).
If you're having trouble getting the port to communicate, I can help you or configure the port mode (EPP/ECP) in your software. CH35XDRV.EXE - Nanjing Qinheng Microelectronics Co., Ltd.
