Note that this used item may be be missing parts or accessories and may show signs of wear. No warranty information is provided.
Although the product description at Fry's advertises USB 3.0 connectivity, according to Western Digital, it only supports FireWire 400 / 800 and USB 2.0. It's formatted for Mac, but can be reformatted for Windows-based systems as well.
Of note, DrivePop also offers Unlimited Lifetime Backup on 1 additional machine with the purchase of its DrivePop Unlimited 5-Machine Lifetime Backup for $119.99, or its DrivePop Ultimate Plan Unlimited Lifetime Backup for $149.99.