2-15
Chapter 2: Motherboard information
2.7.2
Internal connectors
IMPORTANT:
• For a fully configured system, we recommend that you use a power supply
unit (PSU) that complies with ATX 12 V Specification 2.0 (or later version)
and provides a minimum power of 350 W.
• DO NOT forget to connect the 4-pin ATX +12V power plug. Otherwise, the
system will not boot up.
• We recommend that you use a PSU with higher power output when
configuring a system with more power-consuming devices. The system
may become unstable or may not boot up if the power is inadequate.
2.
Battery connector (2-pin BATTERY1)
This connector is for the lithium CMOS battery.
1.
ATX power connectors (24-pin EATX_PWR1, 4-pin EATX_PWR2)
These connectors are for ATX power supply plugs. The power supply plugs
are designed to fit these connectors in only one orientation. Find the proper
orientation and push down firmly until the connectors completely fit.
EMB-Q170C
EMB-Q170C ATX power connectors
EATX_PWR1
PIN 1
PIN 1
GND
+5 Volts
+5 Volts
+5 Volts
-5 Volts
GND
GND
GND
PSON#
GND
-12 Volts
+3 Volts
+3 Volts
+12 Volts
+12 Volts
+5V Standby
Power OK
GND
+5 Volts
GND
+5 Volts
GND
+3 Volts
+3 Volts
EATX_PWR2
+12V DC
+12V DC
GND
GND
A
A
B
B
EMB-Q170C
EMB-Q170C
Battery Holder connector
+BAT
GND
PIN 1
BATTERY1
