| OS | Download Source | File Name (typical) | |----|----------------|----------------------| | | WCH.cn official | CH341SER.EXE (Setup executable) | | Windows 7/8/XP | Same as above | CH341SER.EXE | | macOS | WCH.cn | CH341SER_MAC.ZIP | | Linux | Included in kernel (no separate install) | ch341 module |