Western Digital Store is offering its Western Digital 2TB My Passport Ultra USB Type-C Portable External Hard Drive for Mac in silver for $79.99 (regularly $89.99) and the 4TB model in silver for $129.99 with Free Shipping for a limited time. Plus, get a FREE Western Digital My Passport Denim Case with Zipper when you add both items to cart and use coupon code: ULTRA4MAC at checkout for a limited time. These drives are formatted and marketed for Macs but could easily be formatted and used with Windows too. Deal expires January 25, 2019.