Combine SSD performance w/ HDD capacity & create a HyperDuo RAID array with 2 mSATA + 2 SATA drives through your computers PCIe slot - 2 Port PCI Express 2.0 SATA III 6Gbps RAID Controller Card w/ 2 mSATA Slots & HyperDuo SSD Tiering / mSATA Adapter - PCIe SATA 3 Controller - SATA Adapter Card - RAID Card - mSATA Hyperduo Controller Adapter / Two internal mSATA SSD Slots - HyperDuo SSD Auto-Tiering - Supports Port Multiplier and SSD TRIM - Optimize your system for I/O intensive applications