Figure 47 Backplane rear view 
 
Table 8  Connector and pin header function description 
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 can 
be  maintained  for  the  whole  connection  path  from 
mainboard or HBA/RAID card to the HDD devices. 
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.  
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). 
The event LED, with red/black wire, is located on front 
bezel of  SR107 Plus  and  can  be  configured through 
this pin header.  
Transfer mute signal from backplane to PSU. 
Send alarm signal to PSU. 
Buzzer will alarm when fan and temperature become 
abnormal. 
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. 
The motherboard can monitor HDD temperature and 
fan  status  through  this  connector.  However,  the  I2C 
connector on motherboard side is vendor dependent, 
so  please  contact  our  field  application  engineers  to 
fully utilize this feature.