HighPoint RocketU 1144D PCI-Express 2.0 x4 4-Port USB 3.0 PCI-Express 2.0 x4 HBA Transfer Rate: Up to 5Gb/s Operating Systems Supported: Supports Windows 7, 8, 8.1, 10 / Windows Server 2008, 2012, and Mac OS X 10.9 & later Dimensions: 0.06 x 3.74 x 3.78 Package Contents: 1 x RocketU 1144D Host Adapter 1 x Software CD 1 x Quick Installation Guide