15
(3) Serial Port2 COM2 Header (9-pin) : COM2
COM2
Pin 1
Note: Orient the read marking on the
COM2 ribbon cable to pin 1
Serial Port2 COM2 Header
(4) 1394 Connector Header (9-pin): 1394A, 1394B (for 740DMZ)
1394 Connector Headers
1394A
Pin 1
TP
A
-
GND
VCC
TP
B
-
TP
A+
GND
GN
D
VC
C
TP
B+
1394B
Pin 1
TP
A
-
GND
VCC
TP
B
-
TP
A+
GND
GN
D
VC
C
TP
B+
(5) IDE Activity LED: IDE LED
This connector connects to the hard disk activity indicator light on the case.
(6) Reset switch lead: RESET
This 2-pin connector connects to the case-mounted reset switch for rebooting your
computer without having to turn off your power switch. This is a preferred method of
rebooting in order to prolong the lift of the system’s power supply. See the figure
below.
(7) Speaker connector: SPEAK
This 4-pin connector connects to the case-mounted speaker. See the figure below.
(8) Power LED: PWR LED
The Power LED is light on while the system power is on. Connect the Power LED
from the system case to this pin.
(9) Power switch: PWR BTN
This 2-pin connector connects to the case-mounted power switch to power ON/OFF the
system.
