Supermicro SC825 Series - B-6 Front Connector and Pin Definitions

B-4
SC825 Chassis Manual
Backplane
Main Power
4-Pin Connector
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1
+12V
2 and 3 Ground
4 +5V
CD-ROM/FDD Power
4-Pin Connector
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1
+5V
2 and 3
Ground
4 +12V
#1 and #2 Backplane Main Power Connec-
tors
The 4-pin connectors, designated JP10, and
JP13 provide power to the backplane. See
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#3 and #4 CD-ROM/Floppy Pin Connectors
Pin connectors designated J17 and J18,
  
drives. See the table on the right for pin
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B-6 Front Connector and Pin Denitions
SAS Activity LED Header
Pin Denitions
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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 Ground 10 Empty
#5 Activity LED Headers
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
lead header to work properly, connect to it
using a 10-pin LED cable. This is only used
when the activity LED is not supported by
the hard drive.
#6 and #7 I
2
C Connectors
The I
2
C Connectors, designated JP44 and
JP45, are used to monitor the HDD activity
and status. See the table on the right for pin
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I
2
C Connector
Pin Denitions
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1 Data
2 Ground
3 Clock
4 No Connection