It's a hard drive. For laptops.
It works as expected. If you know what you're doing then you won't have any problems. If you don't know what you're doing, just ask someone if this will work. Chances are, if it's a laptop less than 5 years old that needs a new harddrive (and you don't need a lot of space) then this is what you want. It doesn't have Windows or anything on it, so you need to use your system restore disks or install Ubuntu. Read more
