Silicon Power Diamond D05 2.5-Inch USB 3.0 Portable 1TB External Hard Drive with Shock Sensor Technology SP010TBPHDD05S3T (Metallic Gray) USB 3.0 interface, backwards compatible with USB 2.0 Maximum transmission rate up to 5GB/s Streamlined design and exquisite metallic grain Solid structure and scratch resistant surface Power saving sleep mode USB 3.0 interface, backwards compatible with USB 2.0 Maximum transmission rate up to 5GB/s Streamlined design and exquisite metallic grain Solid structure and scratch resistant surface Power saving sleep mode LED indicates power on and data transmission SP Widget free download software, providing 7 major back-up and security functions Support OS: Windows 7, Windows Vista, Windows XP, Windows 2000, Linux2.6.31 or later, MacOS 10.4 or later (only USB 2.0 currently supported)