Use the built-in "Epson LQ Series 1 (136)" driver.
The Epson LQ-300 is a legacy dot matrix printer. As of Windows 11, Epson has not released a dedicated driver for this model. Do not worry – the printer still works using native Windows drivers. epson lq 300 driver for windows 11
Title: Epson LQ-300 Driver for Windows 11 – Installation Guide Use the built-in "Epson LQ Series 1 (136)" driver