AAEON EMB-Q77B - Manual (Page 26)

EMB-Q77B 2-18
9. HDMI port. This port is for a High-Definition Multimedia Interface (HDMI)
connector, and is HDCP compliant allowing playback of HD DVD, Blu-Ray,
and other protected content.
10. COM2 (Serial) port. This port allow you to connect devices that have serial connectors
such as mouse, modem, or printers. This port supports RS-232 serial specification.
11. PS/2 Keyboard port (purple). This port connects to a PS/2 keyboard.
2.9.2 Internal connectors
1. ATX power connectors (24-pin EATXPWR, 4-pin EATX12V)
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.
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 230W.
• DO NOT forget to connect the 4-pin ATX +12V power plug. Otherwise, the
system will not have enough power.
• 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.
EMB-Q77B ATX power connectors
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
EATXPWR EATX12V
PIN 1
PIN 1
+12V DC +12V DC
GND GND