High Point RocketU 4-Port USB 3.0 PCI-Express 2.0 x4 HBA Controller RocketU 1144C 4x Dedicated 5Gb/s USB 3.0 Ports PCI-Express 2.0 x4 Designed for industry standard USB 3.0/ 2.0 devices Performance Companion for high-speed USB 3.0 Storage Thunderbolt Aware Enabled UAS performance Boost Windows 7 & later / Window Server 2008 & later / Mac OS X 10.9 & later / xHCI Compliant Linux Distributions from Kernel version 2.6.31 & later 4x Dedicated 5Gb/s USB 3.0 Ports UAS performance Boost Uncompromised performance for industry standard USB 3.0/ 2.0 devices Performance Companion for high-speed USB 3.0 Storage Thunderbolt Aware Enabled PCI-Express 2.0 x4