Have you ever looked at the internal USB headers on your motherboard and wondered what you can connect to them? These headers come in a few flavors. We have the older USB 2.0 headers, slightly newer USB 3.0 headers, and a USB-C port on modern motherboards. It’s not uncommon to now find all three present on the PCB, so what can you use them for? Aside from front panel I/O, here are some things you can plug into your motherboard.