HDMI Cable | HDMI and USB to USB-C Cable

<div class="w-full text-subheading-medium-heavy text-left py-[22px] pl-[30px] lg:pl-[40px] bg-lm-background-2">What is a HDMI cable used for?

<div class="w-full text-subheading-medium-heavy text-left py-[22px] pl-[30px] lg:pl-[40px] bg-lm-background-2">Do I have to plug both HDMI and USB-A in at the same time?