Also, check that your monitor is connected via a capable cable (like DisplayPort or a high-speed HDMI). Lastly, update the graphics settings in your operating system to enable 144Hz. To enable ...

Building the right setup with proper cables and ports is ... For example, you need DisplayPort or HDMI 1.3 (or higher) if you ...

In the box, you get the UPerfect UGame K118 Portable Monitor ... and up to a 144Hz refresh rate (when hooked up through USB-C, the provided HDMI to Mini HDMI cable will get you to 120Hz).