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Before we dive into the technical steps, it helps to know what you are working with. The Es9930u is a standard 80mm thermal receipt printer. It usually connects via USB and is designed to be compatible with ESC/POS printing commands. This is important because it means that if you cannot find the specific "Easy Print" driver, generic ESC/POS drivers often work as a fallback.
: Note that macOS users may need a USB-A to USB-C adapter if their device lacks standard USB ports.