I have one of the earliest models of the Nitro 5, and it installed in mine just fine. Couple warnings though: If you want to refresh your operating system after installing it (recommended to avoid hardware glitches), you'll need to remove any additional hard drives (otherwise it errors out). Another thing: after refreshing the operating system, it will only recognize the SSD until you install all of the Windows updates. After installing the updates, any secondary drives will show up again.