Adding RAM is safe if you follow basic precautions.

Not if you do it right, but there are ways to mess it up. The biggest risk is static electricity — a shock to the RAM stick or motherboard can fry components. Touch a metal part of the case to ground yourself before handling, or use an anti-static strap if you’re paranoid.

The other real risk is physical force. RAM sticks are designed to click in with firm, even pressure, but you can crack the slot or bend pins if you shove it in wrong. Line up the notch, make sure the lever is open, and push straight down until both clips snap.

Compatibility is rarely damaging — wrong RAM just won’t boot. But if you buy a stick rated for voltages your motherboard doesn’t support, you could cause instability. Check your motherboard’s manual first.

It’s one of the easiest upgrades you can do — just don’t do it on carpet while shuffling your feet.