It's a drive. Not much else to add given no OS and more. XP for instance might have issues with that size and again, doesn't understand the new 4K sector but it will work anyway (but a little slower.) That is widely discussed so all you need to do is to tell more.
I am going to be upgrading Hard Drives because I need more space on my computer.
I was wondering if this hard drive is good or not
I don't know much about hard drives so I though I should come here and see if anyone knows