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D-5
Appendix D: M35TQ Mobile Rack Specications
D-8 Front Connectors and Pin De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
Pin# Denition
1 +12V
2 and 3 Ground
4 +5V
1. Mobile Rack Main Power Connectors
The 4-pin power connectors, designated JP10
and JP13, provide power to the mobile rack.
See the table on the right for pin denitions.
3. JTAG Connector
The JTAG connector, designated JP47, is used
for diagnostic purposes only.
4. and 5. I
2
C Connectors
The I
2
C connectors, designated JP44 and
JP45, are used to monitor the HDD activity
and status. See the table on the right for pin
denitions.
I
2
C Connector
Pin Denitions
Pin# Denition
1 Data
2 Ground
3 Clock
4 No Connection