Each CPU/Memory+ board has two sets of CPU connectors, marked PROC 0 and PROC 1.
The order in which you fill CPU slots is not critical. However, to optimize heat dissipation in the system:
Fill all PROC 0 locations on all CPU/Memory+ boards before filling any PROC 1 locations. To receive the maximum quantity of diagnostic information, fill PROC 0 on board 0.
After all PROC 0 locations are filled, you may begin filling the PROC 1 locations, again starting from the lowest slot number to the highest.