Hard Disk Led - AOpen AX6BC User Manual

2.3.11 Hard Disk LED

The HDD LED connector is marked as HDD
LED on the board. This connector is designed
for different type of housing, actually only two
pins are necessary for the LED. If your housing
has four pin connector, simply plug it in. If you
have only two pin connector, please connect to
pin 1-2 or pin 3-4 according to the polarity.
Hardware Installation
Caution: The specification of IDE cable is
maximum 46cm (18 inches), make sure your
cable does not excess this length.
Caution: For better signal quality, it is
recommended to set far end side device to
master mode and
sequence to install your new device . Please
refer to following figure.
IDE2 (Secondary Channel)
IDE1 (Primary Channel)
Slave
(2nd)
1
2
3
4
HDD LED
4-pin connector
follow the suggested
Slave
Master
(4th)
(3rd)
Master
(1st)
Pin Description
1 HDD LED
2 GND
3 GND
4 HDD LED
+ 1 +
2
- -
- -
3
+ 4 +
HDD LED
2-pin
connector at
pin 1-2
+
1
2 -
-
3
+
4
HDD LED
2-pin
connector at
pin 3-4
2-13