Sonnet Tempo SSD Pro Plus 6Gb/s SATA PCIe 2.0 Card for Dual SSDs, Thunderbolt Compatible, (TSATA6-SSDPS-E2) Mounts two high-performance 6 GB/S SSDS (sold separately) in your mac pro's PCI express host bus interface for high-performance applications Superior performance with data transfers speeds up to 960 MB/sec Compatible with sonnet's echo express III-D, echo express III-R Supports OS X and windows raid features.Mac Compatibility:Mac Pro (with card slots),OS X 10.6.8+,macOS Sierra compatible,PC Compatibility:PC (with PCIe slots)(6),Windows 10, Windows 8, Windows 7, Windows Vista,Windows Server 2016, 2012, 2008 R2, 2008,Thunderbolt Compatibility:Mac or PC via a Thunderbolt-to-PCIe Card Expansion System