Zotac mSATA USB 3.0 External Storage Device for Windows/Mac OS (RAIDBOX-UD10) 4 modes1. JBOD - Access your mSATA SSDs up to 1-2 drives2. BIG - Access 2 mSATA SSDs as 1 large drive3. RAID 0 - Span data across 2 mSATA SSDs for increased performance4. RAID 1 - Protect your data with a mirror copy on a 2nd mSATA SSD 2 x mSATA slots RAID 0, 1, JBOD & BIG (spanning) support USB 3.0 technology Windows 7/8 x86/x64Ubuntu 12.04Mac OS X Mountain Lion Micro USB 3.05V DC power Height: 13mm (0.51in)Width: 77.2mm (3.04in)Depth: 120.3mm (4,74in)