C-5
Appendix C: Backplane Specifications
8. Activity LED Header
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
LED Header to work properly, connect using
a 10-pin LED cable.
7. MG9072 Chip
The MG9072 is an enclosure management
chip that supports 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
Not Used
4
ACT IN#3
9
Not Used
5
Ground
10
Empty
Backplane
Main Power
4-Pin Connector
(JP10 and JP13)
Pin# Definition
1
+12V
2 and 3
Ground
4
+5V
9. Backplane Main Power Connectors
The 4-pin connectors, designated JP10, and
JP13, provide power to the backplane. See
the table on the right for pin definitions.
10-15. SAS Ports
The SAS ports are used to connect the SAS
drive cables. The six ports are designated
#0 - #5. Each port is also compatible with
SAS and SATA drives.
