Table of Contents
Advertisement
SC825 Chassis Manual
C-6 Front Connector and Pin Definitions
#1 and #2 Backplane Main Power Connec-
tors
The 4-pin connectors, designated JP10, and
JP13 provide power to the backplane. See
the table on the right for pin definitions.
#3 and #4 CD-ROM/Floppy Pin Connectors
Pin connectors designated J17 and J18,
provide power to the CD-ROM and floppy
drives. See the table on the right for pin
definitions.
#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
C Connectors
2
The I
C Connectors, designated JP44 and
2
JP45, are used to monitor the HDD activity
and status. See the table on the right for pin
definitions.
Pin#
2 and 3
Pin#
2 and 3
SAS Activity LED Header
Pin #
Definition
1
ACT IN#0
2
ACT IN#1
3
ACT IN#2
4
ACT IN#3
5
Ground
Pin#
1
2
3
4
C-4
Backplane
Main Power
4-Pin Connector
Definition
1
+12V
Ground
4
+5V
CD-ROM/FDD Power
4-Pin Connector
Definition
1
+5V
Ground
4
+12V
Pin Definitions
Pin #
Definition
6
ACT IN#4
7
ACT IN#5
8
ACT IN#6
9
ACT IN#7
10
Empty
I
C Connector
2
Pin Definitions
Definition
Data
Ground
Clock
No Connection
Advertisement
Table of Contents
