
Chenbro SR209/105/107/108
4-Ports Mini-SAS Backplane User’s Manual
Pin Assignment
[CN1] HDD Activity LED Connector
Pin Def. HDD No.
1 CN11
3 CN21
5 CN31
7
External Activity LED Signal
Input
(Remove jumper then plug
adapter wire to connect
RAID card)
CN41
9 Key Pin
10 N/A
1 & 2 CN11
3 & 4 CN21
5 & 6 CN31
7 & 8
As HDD can support activity
LED signal , using jumper to
close each two pins shown
left side
CN41
[CN2] HDD Fail LED Connector
Pin Def.
1 Fail LED for HDD CN11
2 Fail LED for HDD CN21
3 Fail LED for HDD CN31
4 Fail LED for HDD CN41
[CN3 /CN4] Power Connector
Pin Def.
1 +5V
2 GND
3 GND
4 +12V
[JF1 /JF2] Fan Connector
Pin Def.
1 GND
2 +12V
3 Sensor
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