C-5
Safety Information and Technical Specifications
#6. Sideband Headers
The sideband headers are designated JP51.
For SES-2 to work properly, you must connect
an 8-pin sideband cable. See the table to the
right for pin definitions.
Sideband Headers
(JP51)
Pin # Definition
Pin # Definition
2
Backplane
Addressing
(SB5)
1
Controller
ID (SB6)
4
Reset (SB4)
3
GND (SB2)
6
GND (SB3)
5
SDA (SB1)
8
Backplane
ID (SB7)
7
SCL (SB0)
10
No Connec-
tion
9
No Connec-
tion
#7. I
2
C Connectors
The I
2
C Connectors, designated JP44, are
used to monitor HDD activity and status. See
the table on the right for pin definitions.
I
2
C Connector
Pin Definitions
(JP44)
Pin# Definition
1
Data
2
Ground
3
Clock
4
No Connection
SAS Activity LED Header
Pin Definitions (JP26)
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
Ground
10
Empty
#8. Activity LED Header
The activity LED header, designated JP26,
is used to indicate the activity status of each
SAS drive. For the Activity LED Header to work
properly, connect using a 10-pin LED cable.
#9-#12. SAS Ports
The SAS ports are used to connect the SAS
drive cables. The four ports are designated
#0 - #4. Each port is also compatible with
SATA drives.
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