The tools most of us now use every day are not simple mechanical contraptions, but complex marvels of solid-state electronics. Arguably, there is little point in opening them up; what’s inside can’t readily be tinkered with. Yet, there are times when you’ll want to do just that. Produced in association with iFixit, the leading source of independent repair instructions, this illustrated guide provides a great starting point if you want to maintain, repair and upgrade your hardware. Read on to find out what is under the covers of the products you use.