IBM All-in-One Super7 Single Board Computer PCM-5896 - Manual (Page 41)

Chapter 2 Installation 29
Front panel connector (CN6)
Next you may want to install external LED and switches to monitor
and control the mainboard. These features are completely optional.
Install them only if you need them. The front panel connector
(CN6) is an 8-pin male, dual in-line header and provides connec-
tions for a speaker, hard disk access indicator, and an input switch
for resetting the card.
Front panel connector (CN6)
Pin Signal
1 HDD LED- (Hard disk active)
2 HDD LED+ (V
CC
)
3 Speaker+
4 Speaker- (GND)
5 GND
6 NC
7 Reset switch- (GND)
8 Reset switch+
Speaker
The mainboard can drive an 8 W external speaker at 0.5 watts. If
there is no external speaker, the PCM-5896 provides an on-board
buzzer as an alternative.
LED interface
The front panel LED indicator for hard disk access is an active low
signal (24 mA sink rate).