HP 98568A Installation Instruction page 72

Installing RAM in a Model 350
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Figure 3-9.
16 Mbyte Address Setting
8. If your system contains other than 16 Mbytes, set the address switches on
the new RAM board to match the block labelled "NEW".
9. Now change the address switches on all SMALLER boards to the ones
numbered in the chart. "Smaller" refers to memory size rather than
physical size. Note that boards the same size as or larger than the new
board need not be changed. Only the smaller boards need new addresses.
10. Pick up the new RAM board by the edges and slide it into the empty slot.
Slide the two-connector end in first, with the board with the connectors on
the bottom.
11. If you installed the new RAM board in the expander, reinstall the cover
plate over the slot and reinstall the system bus connector board removed in
step 2. Then skip down to step 13.
12. Locate the new, larger system bus connector board packaged with the new
RAM board and carefully install it onto the processor board and RAM
board(s), and Floating-point Accelerator if installed.
3-24 Adding RAM