How do I know if my computer has USB ports?

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The difference between blue- and black-colored USB ports and connectors is important, because they indicate the speed and capabilities of the USB

4 Port USB A Female Slot Plate Adapter - USB panel - 4 pin USB Type A As stated in Wikipedia The USB and specifications provide a 5 V supply on a single wire to power connected USB devices

lucky ducky slot machine On a modern computer, we're all used to seeing the USB icons, but you might also see the letters SS next to some of your USB ports  While many TVs consolidate all of the ports into a single panel of connections, some sets have two — one for the primary HDMI and USB