SR301 Plus Series
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26
Figure
23
Backplane rear view
Table 8
Connector and pin header function description
Label
Description
Description
Drawing
A
Mini-SAS HD
For connecting to a mainboard or HBA, this Mini-SAS HD
connector is applied. A proper cable selection is essential as well
to make sure good signal integrity, which can be maintained for
the whole connection path from a mainboard or HBA/RAID card
to the HDD devices.
B
Power
These two connectors are used to power four 3.5” hard disks,
connected to this backplane, and each can ensure that all drives
are supplied with stable power inputs. If the chassis fan is also
powered by fan header (JF01), this configuration is highly
recommended.
C
Fan
There are two 4-pin headers for the PWM fan, and it is an
alternative solution that the chassis fan can be powered and
monitored by this backplane instead of a motherboard. If the
chassis fan is connected to a mainboard, users need to disable
the fan monitoring function of backplane by DIP switch (SW1).
D
Signal Indicator
The event LED with red/black wire is located on the front bezel
of SR301 Plus and can be configured through this pin header.
E
Power
Mail
Mute
Transfer mute signal from a backplane to PSU.
F
Power
Fail
Alarm
Send alarm signal to PSU.
G
Buzzer
Buzzer will alarm when fan and temperature become abnormal.
H
DIP Switch
The settings of on-board hardware monitor can be controlled
and configured through this DIP switch. It can manage the
functions of PWM fan & temperature threshold.
I
I2C
The motherboard can monitor HDD temperature and fan status
through this connector. However, the I2C connector on the
motherboard side is dependent on vendors, so please contact
our field application engineers to fully utilize this feature.
