2-2
SAS2-936EL Series Backplane
User's Guide
2-2 Front Connector and Pin Definitions
1. EPP Ports
The EPP ports are used for manufacturer's
diagnostic purposes only.
Backplane
Main Power
4-Pin Connector
Pin# Definition
1
+12V
2 and 3
Ground
4
+5V
3. 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 definitions.
4. Fan Connectors
The 4-pin connectors, designated Fan1, Fan2,
and Fan3, provide power to the fans. See the
table on the right for pin definitions.
Fan Connectors
Pin# Definition
1
Ground
2
+12V
3
Tachometer
4
No connection
2. Primary and Secondary Expander Chips
This primary and secondary expander chips
allow the backplane to support dual port, cas-
cading, and failover configurations.
5. - 10. SAS Ports
Primary and secondary SAS ports.
11. - 12. UART Connectors
Primary and secondary UART connectors.
No jumper required. Secondary UART con-
nector is not present on the SAS2-936EL1
backplane.
13. - 14. MDIO Connectors
Primary and secondary MDIO connectors. For
Supermicro internal use only. Secondary MDIO
connector is not present on the SAS2-936EL1
backplane.
15. - 16. Debug Connectors
Primary and secondary debug connectors.
For Supermicro internal use only. Secondary
debug connector is not present on the SAS2-
936EL1 backplane.
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
