Your computer’s motherboard is an engineering marvel, stuffed with interfaces, ports, sensors, and headers to connect many peripherals. The more money you spend, the more features you get, but you’ll also end up with plenty of I/O that you might not use. I’m as guilty of this as anyone, but it’s not really our fault, as motherboard manufacturers’ scope creep to add what they see as value, and some of these headers are for niche use cases that often don’t apply.