Asus M3A78 User Manual
Page 34
8.
USB connectors (10-1 pin USB78, USB910, USB1112)
These connectors are for USB 2.0 ports. Connect the USB module cable to any of
these connectors, then install the module to a slot opening at the back of the system
chassis. These USB connectors comply with USB 2.0 specification that supports up to
480 Mbps connection speed.
Never connect a 1394 cable to the USB connectors. Doing so will damage the
motherboard!
The USB 2.0 module is purchased separately.
R
M3A78
M3A78 USB 2.0 Connectors
USB78
USB+5V USB_P8
-
USB_P8
+
GN
D
NC
USB+5V USB_P7
-
USB_P7
+
GN
D
1
USB910
USB+5V USB_P10- USB_P10+ GN
D
NC
USB+5V USB_P9
-
USB_P9
+
GN
D
1
USB1112
USB+5V USB_P12- USB_P12+ GN
D
NC
USB+5V USB_P1
1-
USB_P1
1+
GND
1
9.
CPU, Chassis, and Power Fan connectors (4 pin CPU_FAN, 3-pin CHA_FAN,
3_pin PWR_FAN)
The fan connectors support cooling fans of 350mA~740mA (8.88W max.) or a total of
1A~2.22A (26.64W max.) at +12V. Connect the fan cables to the fan connectors on the
motherboard, ensuring that the black wire of each cable matches the ground pin of the
connector.
DO NOT forget to connect the fan cables to the fan connectors. Insufficient air flow inside
the system may damage the motherboard components. These are not jumpers! DO NOT
place jumper caps on the fan connectors.
Only the CPU FAN supports ASUS Q-Fan.
M3A78 Fan Connectors
R
M3A78
CPU_FAN
GN
D
CPU
FA
N PW
R
CPU
FA
N IN
CPU
FA
N PW
M
CHA_FAN
GN
D
Rotation
+12V
PWR_FAN
GN
D
Rotation
+12V
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ASUS M3A78