Aleratec 250154 2 Port SATA III 6 Gbps Expresscard & 34 Adapter Supports SATA 3 transfer speeds of 6.0Gbps and is backward compatible with SATA 1 and SATA 2 &#40;1.5&#47;3.0 Supports Hardware RAID 0 and 1 and non-RAID modes SATA Port Multiplier FIS-based and Command-based switching and max 2 RAID groups supported Dimension - 10.5 x 16 x 2 in.