Chapter 2: Installation
2-15
Power Fail Connector
Connect a cable from your power
supply to JPWF to provide you with
warning of a power supply failure.
The warning signal is passed through
the PWR_LED pin to indicate a power
failure. See the table on the right for
pin defi nitions.
Power Fail Connector
Pin Defi nitions (JPWF)
Pin# Defi nition
1
P/S 1 Fail Signal
2
P/S 2 Fail Signal
3
P/S 3 Fail Signal
4
Reset (from MB)
Note:
This feature is only available when using
redundant power supplies.
Compact Flash Power
Connector
JWF1 is a power connector for a
Compact Flash or DOC (Disk-On-Chip)
device. Connect the appropriate cable
here to provide power to such a device
on your system. See the table on the
right for pin defi nitions.
Compact Flash Power
Connector
Pin Defi nitions (JWF1)
Pin# Defi nition
1
+5V
2
Ground
3
Signal
JSLED1 Header
JSLED1 is used to provide LED indica-
tion of SAS drive activity for internal
SAS ports 0-3. Refer to the table on
the right for pin defi nitions. SAS ports
4-7 are external ports and do not have
board level support for activity LEDs.
I
2
C for SAS Connector
The JS4 connection is used to provide
I
2
C monitoring for the SAS backplane.
See the table on the right for pin defi -
nitions.
Note:
NC indicates no connection.
JSLED1 Header Pin Defi nitions
(JSLED1)
Pin # Defi nition
Pin # Defi nition
1
SAS Port0 Active
6
NC
2
SAS Port1 Active
7
NC
3
SAS Port2 Active
8
NC
4
SAS Port3 Active
9
NC
5
SAS Port0-3 Signal
10
No pin
I
2
C for SAS Connector
Pin Defi nitions (JS4)
Pin# Defi nition
1
I
2
C Data
2
I
2
C Clock
3
Ground
