Here's the AdRAM memory expansion satellite board that fits in the Gary socket on the motherboard. The Gary chip plugs in on top of this satellite board. The ribbon cable goes to the main AdRAM 540 board. Jumpers are present for configuring the amount of Chip RAM (motherboard and AdRAM combined) and the model of Agnus chip on the motherboard. The small blue wire is needed for the Chip RAM configuration I have (512K on motherboard and 512K on the AdRAM 540). It attaches to point 2 of JP2 on the motherboard.