So I was in a rush to buy a laptop a few months ago, and usually I do about two week-loads of homework on the item I am planning to be before doing so. Alas, this time I did zero research and bought a laptop with 21.3 GB :mad: I know bad... And then as the weeks go by I look at my other devices, my computer had 912 Gigs, My Brother's Laptop had 200 Gigs,even my phone had more space than my laptop! After a week of complaining, my mom brought up this thing you could purchase at Best Buy that would expand the amount of space on your computer. Can anyone give me more information on exactly what it is and its exact functions besides the obvious? Thankss :)