Great upgrade for the 930S - highly recommended! Mine was a "basket case" (40v onto everything when the PSU regulators shorted, very early model with no zeners) so keeping the unreliable original CPU board long term when there is such a good replacement around wasn't an option ... With the PIEXX board it's rock solid, the swap was an absolute breeze and the memories, band edges and fast QSY make the whole rig so much easier to use - how it should have been to start with such a good receiver! ... the digital computer interface is just icing on the cake...
ZL2BEN