User`s manual

C-5
Appendix C SAS-836EL Backplane Specications
6. Primary and Secondary Flash Chips
The Primary and Secondary Flash Chips en-
hance the backplane memory.
7. EPP Ports
The EPP ports are used for manufacturer
diagnostic purposes only.
8. Fan Connectors
The 3-pin connectors, designated Fan2, Fan3,
and Fan4, provide power to the fans.
A fan may be connected to Fan1; however,
connector Fan1 is not fully supported by the
backplane. Any fan connected to Fan1 will not
be monitored.
See the table on the right for pin denitions.
Fan Connectors
(Fan1, Fan2, Fan3,
and Fan4)
Pin# Denition
1 Ground
2 +12V
3 Tachometer
9-14. SAS Ports
This backplane supports SAS drives only.
Note that the Primary and Secondary sets of
SAS ports are in different order. From right to
left the ports are Primary 0, 1, 2 and Second-
ary 1, 0, 2.