HP 98568A Installation Instruction page 34

HP 98568A Backplane Expander
20. Refer to Chapter 3, "RAM Cards", Chapter 4, "Accessory Cards", and
Chapter 5, "Interface Cards" of this manual to install various cards in the
expander. When you finish installing cards, don't forget to connect the
power cords to the computer and expander.
INSTALLATION COMPLETE!
Do You Have Another Expander to Add?
NO
Proceed to Chapter 3, "RAM Cards".
YES
Refer to the table of contents for this chapter to find
where your next installation instructions begin.
2-10 Adding Expanders