Hi, I have an old Toshiba Chromebook 2 and would like to replace the hard drive with a new one that hasn't been used for safety purposes. I'm not looking to upgrade or change the specs, but I'm not sure where to look. If I open the case to put in a new battery and look at the hard drive part number, is that all I need to search online? Laptop inventory has some, but I don't know if they are used. K