Five ways to upgrade your Raspberry Pi (free PDF) – TechRepublic

Five ways to upgrade your Raspberry Pi (free PDF) TechRepublic he Raspberry Pi may pack in a lot of computer for $35, but there are times you'll want to do more than the vanilla board allows. Fortunately, the success of the Pi—more than 20 million sold and counting—means a huge ecosystem of add-ons is available …