HP 330 Service Information Manual page 89

HP 98242 010 Backplane Board
Introduction
DIO backplanes are used as an option for the computer and standard in expanders.
Two versions are used::
• 2-Slot, used as an option to the computer and HP 98570A expander .
• 4-Slot, used as an option to the computer and HP 98570A expander. Two of these are
used in the HP 98568A Opt. 132 expander for eight DIO slots.
Functions
Each expands a single motherboard DIO bus connector to either two or four slots for use with
Series 200 or 300 accessory or interface cards. Function wise, they're no more than an extension
of the DIO connector on the motherboard.
There are no active cOlnponents on the DIO backplane boards or their associated ribbon cables.
Functional Description
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