Amazon has the Western Digital 4TB My Passport USB 3.0 Portable External Hard Drive in black to choose from, model no. WDBYFT0040BBK-WESN, for $99 (regularly $119) with Free Shipping for a limited time.

My Passport is the trusted, portable storage that perfectly complements your on-the-go lifestyle. Designed to fit in the palm of your hand, there’s plenty of space to store a massive amount of photos, videos, music and documents. Perfectly paired with WD Backup software and password protection, the My Passport drive helps keep your files safe. It features transfer rates up to 5Gb/s and 256-bit AES hardware encryption.