If you just purchased a bare drive (and it's quite old, it should be noted;  Hitachi branded drives  haven't been manufactured in over 10 years, Hitachi having sold its drive business to Western Digital in 2012), you'll need to mount it in a 3.5" external drive case with a power supply and a USB connection (presumably) for the notebook you have (and haven't mentioned).  
I have just purchased a Hitachi DeskStar HDP 725050GLA360 3.5 50oGB 7200rpm 16MpSATAHard Disk Drive to use as a external back-up storage. Q: How do I connect to my Laptop?  
External Hard Drive