1、The engineering machine is located on the SwitchBoard diagnostic system interface, which is the entrance for testing hardware functions such as screens, touch controls, interfaces, and batteries within Apple. It does not have a desktop and cannot install any software.

2、The motherboard and screen are basically normal, and there are engraved characters on the back cover.

3、Can only be used as an early engineering testing system for collecting or researching Apple.

Please do not purchase if you mind!