From left to right: LCD interface, ZX96 with Giant and Driver boards, AT-Keyboard interface, Harddisk interface, Floppy controller, Megabyte Board and Multi-IO Board. (Underneath the flatcables...)

The order of the individual boards can be seen more clearly in this picture, the boards pulled out from left to right are: LCD, AT-Keyboard interface, Harddisk interface, Floppy controller.