With an electro-galvanized, cold-rolled, coil steel and aluminum enclosure, the 18TB Blackbox Pro Enterprise Class 7200 rpm 3.1 Type-C External Hard Drive from Glyph Technologies is designed to protect your important data from the elements. Inside this rugged housing is an 18TB hard drive featuring USB 3.1 Type-C connectivity, making it simple to connect directly to Mac computers, as it comes preformatted HFS+. The drive is also compatible with Windows-based computers; all that is needed is a quick reformat of the drive. Regardless of the operating system, the Blackbox Pro hard drive spins at 7200 rpm, supports a transfer rate of up to 250 MB/s to transfer even large files quickly and efficiently and is also compatible with Thunderbolt 3 ports. Included with the Blackbox Pro are a USB 3.1 Type-C to USB 3.1 Type-C cable, a USB 3.1 Type-C to USB 3.0/2.0 Type-A cable, and an external power adapter. General Features Rugged Storage for the Rugged Professional The Blackbox Pro is a tough, professional external hard drive that features USB 3.1 Type-C technology, a professional power supply, and optimized cooling. This drive also works with USB 3.0 and 2.0 connections, making the Blackbox Pro both future-proof and backward compatible. Time Machine Compatible The Glyph Blackbox Pro comes preformatted HFS+ with Journaling and is Time Machine compatible out of the box. With a simple reformat the Blackbox Pro can be used with computers running the Windows OS. USB 3.1 Gen 2 Doubling the speed of its predecessor, USB 3.1 Gen 2 features a maximum throughput of 10 Gb/s when used with compatible devices.