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#5., #6., #7., #8. I
C Connectors
2
The I
C connectors, designated JP37, JP52,
2
JP95, and JP96, are for enclosure manage-
ment of the I
C mode connection. See the
2
table on the right for pin definitions.
#9. Backplane Main Power Connectors
The 4-pin connectors, designated JP10,
JP13, JP46, and JP48, provide power to the
backplane. See the table on the right for pin
definitions. All four of these connectors must
be used at the same time.
#10. Upgrade Connectors
The upgrade connectors are designated
JP69 (for U19) and JP78 (for U40). Upgrade
connectors are for manufacturing use only.
Appendix C Backplane Specifications
Pin#
1
2
3
4
Pin#
1
2 and 3
4
C-5
I
C Y-Cable
2
Connector
Pin Definitions
Definition
Data
Ground
Clock
No Connection
Backplane
Main Power
4-Pin Connector
Definition
+12V
Ground
+5V
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