This hard drive case is designed for use with hard drives removed from the following MacBook Air models: 2010/2011 Air models A1369 and A1370 2012 Air models 1425, 1398, 1466, 1465 Key benefits and features Fast data transfer: adapter supports output interfaces 12+6Pin and 18+8Pin and delivers data speeds up to 6 Gbps for quick access to stored files. Simple mode switching: switch between 2011 and 2012 drive reading to ensure compatibility with the appropriate hard disk. Safe single drive operation: only one hard disk can be used at a time, preventing conflicts and ensuring stable performance. Clear compatibility scope: designed specifically for the listed MacBook Air models, helping you select the right case and avoid fit issues. How it works Compatible drives: accepts hard drives removed from the specified 2010/2011 Air models A1369 A1370 and 2012 Air models 1425/1398/1466/1465. Interface and speed: built with 12+6Pin and 18+8Pin output interfaces, supporting transfer speeds up to 6 Gbps. Operational mode: use the 2011 mode to read a 2011 hard disk; use the 2012 mode to read a 2012 hard disk. Oneatatime use: to maintain performance and reliability, only a single hard disk should be connected and read at once. Use scenarios Data recovery from an older MacBook Air: recover important files from a 2011 or 2012 hard drive by connecting it through the adapter. Drive upgrading or data migration: transfer data from an old MacBook Air hard drive to a drive or external storage with straightforward mode switching. Archiving and backup of legacy drives: securely access and back up files from 2011 or 2012 drives without altering the original hardware setup. Notes This product is intended for use with the specified MacBook Air models and corresponding hard drive types. Only one hard drive should be connected at any given time to ensure proper operation and data integrity.