This is a small hard drive, but at the time of this writing (4/2020), it's large enough to hold Windows 10, and still have some room to throw all your cat photos, you downloaded off the internet, on to it. If you're looking to upgrade your computer, you can do this and RAM. Those two upgrades (do this one first) are HUGE. If you have an old hard drive in your laptop, it makes it feel like you're using a computer from the stone age. Once you upgrade it with this, assuming you have enough RAM, you'll feel like you just bought a new computer. If you want to breath life into your computer, don't plan on loading it up with 5+ graphics intensive, modern games, then this is for sure for you. I found that in most computers, you can use the media creation tool (from Microsoft), to create the Windows 10 install disk, and put the operating directly on this hard drive, and somehow Microsoft just seems to know you had it previously installed. Just remember, if you do that, to buy a thumb drive, and copy all your cat videos, cute kid videos you haven't had time to upload to Facebook yet, along with the 10 hours of snoop diggity dog music you have stashed, and hiding, on your old computer, onto that thumb drive, prior to trashing the old hard drive. You may also want to smash the old hard drive to bits, if you don't know how to do a proper formatting. You wouldn't want the pirates to get a hold of your financials.... This item, much like go faster stripes on a sports car, is the most important upgrade you'll ever make to your aging computer/laptop.