Whether you're a first-time computer builder or a seasoned pro, deviantART user Sonic480's computer hardware poster, which helps you identify countless different types of hard drives, RAM, ports, CPU sockets, power connectors, and more, is a great reference.

Chances are you don't know the ins and outs of every single connector or piece of computer hardware you'll come across (even if you do have experience), and while we're sure the poster could cover even more territory (if we're being picky), it's a pretty great visual reference.