This drive replaces wd green drive part number wd20ezrx get storage capacity up to 6 tb with wd blue drives boost your pc storage with wd blue drives the brand designed just for desktop and all in one pcs the wd blue family now delivers data storage capacities up to 6 tb which capacity is right for you entry level up to 1 tb mainstream 2 tb to 4 tb best upgrade 5 tb improve your pc performance pair a larger capacity drive with an ssd to give your desktop a performance a