2-2
SAS M35TQ Mobile Rack
User's Guide
2-2 Front Connector and Pin Defi nitions
2. MG9072 Chip
The MG9072 is an enclosure management
chip that supports the SES-2 controller and
SES-2 protocols.
Mobile rack
Main Power
4-Pin Connector
(JP10 and JP13)
Pin# Defi nition
1
+12V
2 and 3
Ground
4
+5V
1. Mobile rack Main Power Connectors
The 4-pin connectors, designated JP10
and JP13, provide power to the mobile
rack. See the table on the right for pin
defi nitions.
3. JTAG Connector
The JTAG connector, designated JP47, is
used for diagnostic purposes only. This con-
nector should only be used a certifi ed and
experienced technician.
4. and 5. I
2
C Connectors
The I
2
C Connectors, designated JP44 and
JP45, are used to monitor HDD activity and
status. See the table on the right for pin
defi nitions.
I
2
C Connector
Pin Defi nitions
(JP44 and JP45)
Pin# Defi nition
1
Data
2
Ground
3
Clock
4
No Connection
