Whether you’re building your own computer, installing new RAM, or upgrading your PC’s components, you’ll be opening it up and touching sensitive electronics components. While doing this, you should be careful of static electricity, which can harm your computer.

You don’t have to be completely paranoid about static electricity, and there’s no need to go overboard and buy an antistatic mat. A few basic precautions are all you need.

via How-To Geek http://www.howtogeek.com/169994/how-to-protect-your-pcs-hardware-from-static-electricity-when-working-on-it/