Great working coreboard. Ive exchanged my PX3 RK3188 1GB with this PX5 Coreboard. PX3 has 72 Pins and the PX5 has 76 Pins. But it doesnt matter. The Pin alignment is done by the 2 mountig holes. Its installed in an MTCD / Joying Radio. Only one screw (in the middle) has to be removed.