3-3
Chapter 3 BPN-SAS3-M14TQ Backplane Specifications
3-3 Rear Connector and Component Definitions
Backplane
Main Power
4-Pin Connectors
Pin# Definition
1
+12V
2 and 3
Ground
4
+5V
#3 Backplane Main Power Connectors
The 4-pin connectors, designated J9, provides
power to the backplane. See the table on the
right for pin definitions.
#9 Fan Connector
The fan connector is designated FAN1 and is a
standard 4-pin fan connector.
#4, #5, #7 and #8 SAS/SATA Ports
The SATA ports are used to connect the SATA
cables. The ports are designated by the HDD #.
#1 MCU Upgrade Connectors
This 8-pin connector, designated J5, provides a
connection for upgrading the MCU. The upgrade
connector is for manufacturing use only.
Fan Header
Pin Definitions
Pin# Definition
1
Ground
2
+12V
3
Tachometer
4
PWM
#12 SGPIO 1 Connector
The SGPIO connector allows for the connection
of an 8-pin cable connection.
SGPIO 1
Pin Definitions
Pin# Definition
Pin# Definition
1
NC
2
SDATA In
3
Ground
4
SDATA
Out
5
SGPIO
Load
6
Ground
7
SGPIO
Clock
8
NC
NC = No Connection
