This Cable Adapter Allows You To Connect Sata Devices To Your Macbook Pro 13" With Usb 3.0. It Features An Sff-8643 Internal Mini Sas Hd Connector That Splits Into Four 29Pin Sff-8482 Connectors, Providing Data Transfer Speeds Up To 12Gbps. Additionally, It Includes A 15Pin Sas Power Port To Supply Power To Attached Drives. Made Of Durable Materials, This 1 Meter Long Cable Is Flexible And Lightweight For Easy Handling. Simply Plug One End Into Your Macbook Pro'S Usb 3.0 Port And The Other End To Your Sata Hard Drives Or Ssds. Now You Can Access And Back Up And Files On Your Sata Devices With Blazing Fast Speeds Without Having To Open Up Your Computer. It'S An Ideal Solution For Additional External Storage With Your Macbook Pro 13".