Designed for Macs running Mac OS 10.5 or later, shockproof Armor A65M provides all-inclusive safety shields that protect against threats which may occur during daily operations. Cup-shaped design, which complies with MIL-STD-810G 516.6 Procedure IV and IP67 standards, is constructed with 2 layers of rubber, one unibody frame in middle, and internal suspension system. Preformatted in HFS+, plug-and-play unit supports Time Machine® and comes in 500 GB, 1 TB, and 2 TB capacities.