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13
J4/J22/J23/J35: 4-pin Fan Connector with Speed Control
+12V
S pee d C ontrol
GND
Tachome ter
+12V
Speed C on trol
GND
Tachometer
Use these headers to connect the cooling fans to
the motherboard to keep the system stable and
reliable.
This connector supports the tachometer monitoring
and auto fan speed control.
J4: FAN2 (for CPU2) J23: FAN3
J22: FAN4 J35: FAN1 (for CPU1)
Pin 1
Pin 2
Pin 3
Pin 4
GND
+12V
Tachometer
Speed
Control
J2/J3: 3-pin Back Panel Fan Connector
+12V
N C
GND
Use these headers to connect cooling fans to the
motherboard to keep the system stable and
reliable.
Pin 1
Pin 2
Pin 3
GND
+12V
NC
J6: COM2 Header
1 9
2 10
Use these pin definitions to connect a port to COM2.
Signal
Pin
Pin
Signal
DCD
1
2
DSR
RXD
3
4
RTS
TXD
5
6
CTS
DTR
7
8
RI
GND
9
10
KEY
Содержание S3970
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