I installed it in a Dell XPS. You need a SATA connection, you do not say how old your dell is but SATA is the normal hard drive connection for several years. The WD blue is SATA 3 but is backward compatible with SATA 1 & 2. The only different is a slower speed with the older SATA standards. If you don't know what your hard drive donnection is you can download HWINFO, just search for hwinfo and install. It is recognized by norton as a safe program. When you install and run it will give you tons of info about your computer including whether you have a SATA or other hard drive connection. I cannot guarantee results as you have to know how to initialize hard drives, format them or know how to clone them. But you can learn all of that from the internet.