Supermicro SC846BE1C-R1K23B User Manual page 146

SC846X Chassis Manual
E-4 Rear Connector and Pin Definitions
1-2. Primary and Secondary Expander Chips
The primary and secondary expander chips allow the backplane to support dual
port, cascading, and failover configurations.
3. Backplane Power Connectors
The 4-pin connectors, designated PWR1
to PWR6 provide power to the backplane.
See the table on the right for pin definitions.
4-5. Primary and Secondary SAS Ports
The primary SAS connectors are designated
J49 and J50. The secondary SAS Ports are
designated J51 through J52 and are not
present on EL1 single port backplanes.
6-7. Primary and Secondary UART Connectors
For manufacturer's diagnostic purposes only. The primary UART connector is
designated PRI-UART and J30. The secondary UART connector is designated
SEE-UART and J24 and is not present on BPN-SAS3-846EL1.
8-9. SDB Connectors
These are debug connectors used for the manufacturer's diagnostic purposes
only. The Primary SDB connector is designated PRI-SDB and J31. The
secondary SDB connector is designated SEE-SDB and J29. (Not present on
BPN-SAS3-846EL1 backplanes)
10. I C Connectors
2
The I C connector. is designated EXP I2C0 and J48.
2
11. Management Data Port
For manufacturer's use only. JP3 P_MDIO and JP4 P_MDIO are primary and
secondary management data in and out.
Pin#
1
2 and 3
4
E-4
Backplane
Main Power
4-Pin Connector
Definition
+12V
Ground
+5V