SR209 Plus Series
│
30
Figure 32 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 a HBA, this mini-SAS
HD connector is applied. A proper cable selection is
essential as well to make sure good signal integrity can
be maintained for the whole connection path from
mainboard or HBA/RAID card to the HDD devices.
B
Power
These two connectors are used to power four 3.5” h
ard
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
alternative solution that the chassis fan can be
powered and monitored by this backplane instead of
motherboard. If the chassis fan is connected to
mainboard, user needs 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 front
bezel of SR209 Plus, and can be configured through
this pin header.
E
Power fail mute
Transfer mute signal from backplane to PSU
F
Power fail alarm
Send alarm signal to PSU.
G
Buzzer
Buzzer will alarm when fan and temperature become
abnormal
