User`s manual

C-3
Safety Information and Technical Specifications
C-5 Front Connector and Pin Definitions
#2. MG9071 and MG9072 Chips
The MG9071 and
MG9072 are enclosure
management chips that support the SES-2
controller and SES-2 protocols.
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
#1. Activity LED Header
The activity LED header, designated JP26 and
JP47, 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.
SAS Activity LED Header
Pin Definitions (JP47)
Pin # Definition Pin # Definition
1 ACT IN#8 6 ACT IN#12
2 ACT IN#9 7 ACT IN#13
3 ACT IN#10 8 ACT IN#14
4 ACT IN#11 9 ACT IN#15
5 Ground 10 Empty
#3/#4/#5. I
2
C Connectors
The I
2
C Connectors, designated JP37, JP52,
and JP95, are used to monitor HDD activity
and status. See the table on the right for pin
definitions.
I
2
C Connector
Pin Definitions
(JP37, JP52,
and JP95)
Pin# Definition
1 Data
2 Ground
3 Clock
4 No Connection