Q7B300 Qseven Module Development Board
18
Board and Pin Assignments
2.5.8
ATX Power Connectors (CN10 and CN15)
Steady and sufficient power can be supplied to all components on the board by
connecting power connector. Please make sure all components and devices are
properly installed before connecting the power connector.
External power supply plug fits into this connector in only one orientation. Properly press
down power supply plug until it completely and firmly fits into this connector. Loose
connection may cause system instability.
Note
Use jumper JP11 to select AT or ATX mode, see section 2.4.11.
The CN10 is a 24-pin ATX power connector.
The CN15 is an 8-pin +12V ATX power connector. The Q7B300 supports AT mode when
you plug only the 12V power supply into CN15.
2.5.9
Fan Connector (CN11)
Fan is needed for cooling down system temperature. The system fan interface is
available through 3-pin connector (CN11).
Pin Signal
Pin Signal
1
+3.3V
13
+3.3V
2
+3.3V
14
-12V
3
GND
15
GND
4
+5V
16
PS_ON#
5
GND
17
GND
6
+5V
18
GND
7
GND
19
GND
8
PWR_ON
20
N.C.
9
+5VSB
21
+5V
10
+12V
22
+5V
11
+12V
23
+5V
12
+3.3V
24
GND
Pin Signal
Pin
Signal
1
GND
5
+12V
2
GND
6
+12V
3
GND
7
+12V
4
GND
8
+12V
Pin
Signal
1
GND
2
FAN_PWMOUT
3
FAN_TACHOIN
