Koutech Dual Channel SATA 6Gb/s PCI Express (x1) Internal RAID Caddy Compliant with one-lane PCI Express specifications (PCIe x1 slot) and compliant with 5Gb/s PCI Express 2.0 specifications (*1) Two (2) 6.0Gbps Serial ATA III channels and supports all SATA, SATA II, SATA III devices at 1.5/3.0/6.0 Gbps Supports any two (2) 2.5" HDDs or SSDs plus compliant with Serial ATA 2.6 specifications Supports AES-256 and 48-bit LBA mode which can break capacity limit to support hard disk drive larger than 137GB in one partition Supports 32-bit & 64-bit Windows XP/Server 2003/Vista/Server 2008/Windows 7/Windows 8