SUPER MICRO Computer SAS2-826EL Switch User Manual


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2-2
SAS2-826EL Series Backplane User's Guide
2-2 FrontConnectorandPinDenitions
1. EPP Ports
The EPP ports are used for manufacturer di-
agnostic purposes only.
Backplane
Main Power
4-Pin Connector
Pin#Denition
1
+12V
2 and 3 Ground
4 +5V
3. Backplane Main Power Connectors
The 4-pin connectors, designated PWR1,
PWR2, and PWR3, provide power to the
backplane. See the table on the right for pin
denitions.
4. Fan Connectors
The 3-pin connectors, designated Fan1, Fan2,
and Fan3, provide power to the fans. See the
tableontherightforpindenitions.
Fan Connectors
Pin#Denition
1 Ground
2 +12V
3 Tachometer
2. Primary and Secondary Expander Chips
This Primary and Secondary Expander Chips
allow the backplane to support dual port, cas-
cading,andfailovercongurations.
5. - 8. SAS Ports
Primary and secondary SAS ports.
9. - 10. UART Connectors
Primary and secondary UART connectors: For
manufacturer's use only. Secondary connector
is not present on SAS2-826EL1.
11. - 12. MDIO Connectors
Primary and secondary MDIO connectors. For
manufacturer's use only. Secondary connector
is not present on SAS2-826EL1.
13. - 14. Debug Connectors
Primary and secondary debug connectors. For
manufacturer's use only. Secondary connector
is not present on SAS2-826EL1.
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