jetway 939gt4slir311 用户手册
18
USB Port Headers
Pin 1
USB1
VCC
-
DA
TA
GN
D
+D
AT
A
VCC
OC
-
DA
TA
GN
D
+D
AT
A
Pin 1
USB2
VCC
-
DA
TA
GN
D
+D
AT
A
VCC
OC
-
DA
TA
GN
D
+D
AT
A
Pin 1
USB3
VCC
-
DA
TA
GN
D
+D
AT
A
VCC
OC
-
DA
TA
GN
D
+D
AT
A
(3) Speaker connector: SPEAK
This 4-pin connector connects to the case-mounted speaker. See the figure below.
(4) 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.
from the system case to this pin.
(5) IDE Activity LED: HD 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.
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) Power switch: PWR BTN
This 2-pin connector connects to the case-mounted power switch to power ON/OFF the
system.
system.
System Case Connections
HD
L
E
D
R
ESET
VC
C
5
G
ND
V
CC5
PW
R
L
E
D
PWRB
T
N
PW
R
B
T
N
PW
R
L
E
D
HDD
LE
RS
TS
W
NC
GN
D
JW FP
Pin 1
SPEAK
S
P
KR
GN
D
NC
VC
C
5
Pin 1
PWRLED
Pin 1
(8) FAN Headers (3-pin) : CHAFAN, SFAN1, SFAN2, CPUFAN
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.
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.