Features: Two Hard Disk not use at the same time. Only one can be used at a time. Switching to 2011 read 2011 Hard Disk, Switching to 2012 to read 2012 Hard Disk. Before using this product, it is necessary to ensure that your hard drive is not encrypted, otherwise it cannot be recognized when connection to a computer using a hard drive case. This hard drive case is only suitable for use with hard drive removed for 2010/2011 AIR A1369 A1370 or 2012 Air 1425/1398/1466/1465. This adapter features output interfaces (12+6Pin and 18+8Pin) and supports speeds up to 6Gbps, ensuring fast data transfer and reliable performanceS. Specifications: Component:Plastic Output Interface: 2010/2011 12+6Pin, 2012 18+8Pin Input Interface: 22Pin 22Pin Speed: 6Gbps Power Supply: 3.3V/5V Use: Switching the m.2 Hard Disk with a button Size:Approx.12.3cm/4.84inch Package Includes: 1Pc Adapter Card note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.