The Seagate Backup Plus Hub for Mac optimizes external storage with simple local or cloud file backup for your computers and mobile devices - and an intelligent USB hub to charge and manage your USB-connected devices. The two front-facing intelligent USB 3.0 ports amplify the functionality of your drive by allowing you to charge and connect two external devices, such as your phone, tablet or camera - even if your computer is in off/standby mode. Type: Hard drive - external (portable) Capacity: 4 TB Interface: USB 3.0 Data Transfer Rate: 5.0 Gbps (USB 3.0) Features: Built-in USB hub, automatic backup, Apple Time Machine compatible, cloud backup Power Source: Included AC adapter Enclosure Color: White Dimensions (WxDxH): 1.6 in x 7.8 in x 4.6 in Weight: 2.34 lbs Localization: Americas Manufacturer Warranty: 2 years warranty Device Type: Hard drive - external (portable) Capacity: 4 TB Interface: USB 3.0 Features: Built-in USB hub, automatic backup, Apple Time Machine compatible, cloud backup Width: 1.6 in Depth: 7.8 in Height: 4.6 in Weight: 2.34 lbs Interface Transfer Rate: 5.0 Gbps (USB 3.0) Max Data Transfer Rate: 160 MB/s Interfaces: 2 x USB 3.0 Power Source: Included AC adapter Software Included: Seagate Dashboard, OneDrive (200 GB Cloud Storage) (2 years subscription), HFS+ driver for PC OS Required: Microsoft Windows 7 or later, Apple MacOS X 10.9 or later Cables Included: 1 x USB 3.0 cable - 4 ft Enclosure Color: White Localization: Americas Service & Support: Limited warranty - 2 years Service & Support: Limited warranty - 2 years