The is a cheap, USB‑based multi‑protocol chip developed by Nanjing Qinheng Microelectronics (WCH). It supports USB to SPI, I²C, UART, and parallel port interfaces. In practice, a “CH341A programmer” is a small PCB containing the CH341A IC, a 5‑pin or 8‑pin socket for target chips, and sometimes a voltage selector (5V/3.3V). It’s widely known as the “土豪金” (Tuhao Gold) version because many boards are gold‑colored.
Thanks to its low cost (often $5–10 on AliExpress) and community‑driven software support, the CH341A has become the go‑to tool for hobbyists and repair shops worldwide. neoprogrammer 21019 ch341a link
is an optimized, alternative flashing software engineered specifically for the ubiquitous, low-cost CH341A USB hardware programmer . Initially developed as a branched evolution of the open-source AsProgrammer GitHub project, NeoProgrammer has become a favorite utility for repair technicians, hardware hackers, and DIY enthusiasts. It allows users to read, erase, write, and verify BIOS, firmware, and EEPROM chips without navigating the buggy interfaces or missing chip databases of the official WCH proprietary software. The is a cheap, USB‑based multi‑protocol chip developed
In the context of NeoProgrammer, we use the almost exclusively for flashing 25 series BIOS chips. It’s widely known as the “土豪金” (Tuhao Gold)