![]() For reference, a refresh rate of 60Hz is ideal for a smooth experience. Some can go beyond that, but have a lower refresh rate, which means video will look sharper but choppier. ![]() All of the adapters in our guide can produce at least a 1080P (Full HD) video signal. Maximum Resolution: USB ports have a fixed amount of bandwidth (the amount of data it can transfer at one time), which determines the maximum video resolution it can output. We’ve included graphics adapters that can connect to USB-A and USB-C ports in our guide, but make sure to take a look at your computer to determine the right one for you. USB-C: For a long time, all computers had full-sized USB-A ports on them (they’re shaped like rectangles), but many ultra modern computers have USB-C ports instead (they’re shaped like a small oval). Make sure to check which type of port your monitor uses before getting an adapter, to ensure it’ll work properly. Both ports carry a video signal, but HDMI also carries an audio signal. VGA: All of the graphics adapters in our guide get plugged into a USB port (more on that in a second), but some terminate into a VGA port while others terminate into an HDMI port. There are many factors to think about when choosing the right graphics adapter for you below are the most important ones, which we considered while we were researching this list. What You Need to Know Before Buying a Graphics Adapter
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