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Supermicro SC747 Chassis User's Manual
5. Backplane Main Power
Connectors
The 4-pin connectors designated
JP66 and JP68 provide power to
the backplane. See the table on
the right for pin definitions.
6. Fan Connectors
The 4-pin connectors designated
JP54, JP56, and JP60 provide
power to the fans. See the table
on the right for pin definitions.
7. SAS Activity LED Header
The activity LED header,
designated JP26, is used to
indicate the activity status of
each SAS drive. The Activity
LED Header is located on the
front panel. For the Activity LED
Header to work properly, connect
using a 10-pin LED cable.
8-15. SAS Ports
The SAS ports are used to connect
the SAS drive cables. The eight
ports are designated #0 - #7. Each
port is also compatible with SATA
drives.
Backplane 4-pin Main
Power Connector
Pin#
Definition
1
+12V
2/3
Ground
4
+5V
Fan Connectors
Pin#
Definition
1
Ground
2
+12V
3
Tachometer
4
NC
NC = No Connection
SAS Activity LED Header
Pin#
Definition
Pin#
Definition
1
ACT IN#0
6
ACT IN#4
2
ACT IN#1
7
ACT IN#5
3
ACT IN#2
8
ACT IN#6
4
ACT IN#3
9
ACT IN#7
5
NC
10
Ground
NC = No Connection