PS3 320Gb hard disk upgrade to 1Tb. Just remember that you don't want a fast spinning drive in here as heat will accumulate. Ideally, 5400 rpm should be what to aim for here. You will need an ext hard drive to back up your files via the USB port. Instructions found on YouTube. These are 2 inch laptop drives. Mine is a Toshiba 1Tb. They support 2Tb upgrades.