25
USB Port Headers
Pin 1
USB4
VCC
-
DA
TA
GN
D
+
DAT
A
VCC
OC
-
DA
TA
GND
+
DAT
A
Pin 1
USB3
VC
C
-
DA
TA
GND
+
DAT
A
VCC
OC
-
DA
TA
GND
+
DAT
A
(3) IDE Activity LED: IDE LED
This connector connects to the hard disk activity indicator light on the case.
(4) 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.
(5) 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.
(6) Speaker connector: SPEAK
This 4-pin connector connects to the case-mounted speaker. See the figure below.
(7) Power switch: PWR BTN
This 2-pin connector connects to the case-mounted power switch to power ON/OFF the
system.
System Case Connections
HDL
E
D
R
ESET
V
CC5
G
ND
V
CC5
PW
R
LED
PW
R
B
T
N
P
W
RBT
N
PW
R
L
E
D
HDDL
E
RS
T
S
W
NC
G
ND
JW FP
Pin 1
SPEAK
S
P
KR
G
ND
NC
V
CC5
Pin 1
PWRLED
Pin 1
(8) FAN Power Headers: SYSFAN1, SYSFAN2 (3-pin), CPUFAN (4-pin)
These connectors support cooling fans of 350mA (4.2 Watts) or less, depending on the
fan manufacturer, the wire and plug may be different. The red wire should be positive,
while the black should be ground. Connect the fan’s plug to the board taking into
consideration the polarity of connector.
