User`s manual

C-4
SC836 Chassis Manual
C-6 Front Connector and Pin Denitions Rev 1.10
1. CD-ROM/Floppy 4-Pin Connectors
The 4-pin connectors, designated JP105 and
JP106, provide power to the CD-ROM and
oppy drives. See the table on the right for
pin denitions.
CD-ROM/
FDD Power
4-Pin Connector
Pin# Denition
1 +5V
2 and 3 Ground
4 +12V
Backplane
Main Power
4-Pin Connector
Pin# Denition
1 +12V
2 and 3 Ground
4 +5V
2. Backplane Main Power Connectors
The 4-pin connectors, designated PWR1,
PWR2, PWR3, and PWR4, provide power to
the backplane. See the table on the right for
pin denitions.
3. and 4. Primary and Secondary Expander
Chips
The primary and secondary expander chips
allow the backplane to support dual ports,
cascading and failover.
5. and 6. Primary and Secondary Flash
Chips
The primary and secondary ash chips en-
hance the backplane memory.