A RAM board designed for the A1000 which plugs into the CPU socket. There appears to be several versions of this card which require slightly different installation methods. If your card has two cables on it, then the clip labelled J2 should be connected to the Chip labelled "P" on the ROM daughterboard. It connects to the pin on the right hand side of the chip, 10 pins in from the back of the machine. The next pin down is for connecting the clip labelled J1.

Thanks to Gustavo Sarmento