Power Supply Considerations - Aaeon EMB-Q87A User Manual

19. Audio amplifier connector (4-pin AMP_CON)
This connector is for an internal stereo amplifier speakers support (2W/4Ω via
WtoB header).
EMB-Q87A SPEAKER OUT Connector
2.9

Power Supply Considerations

CAUTION!
• The external DC jack (5.5/2.5mm) is the primary power input connector of
• There is no isolation circuitry between the external DC jack and the internal 2
• Simultaneous connection of both external and internal power supply units
• System power requirements will depend on actual system configurations
2-26
EMB-Q87A. However, the desktop board also provides an internal 2 x 2
power connector that can be used in custom-developed systems that have
an internal power supply.
x 2 power connector. It is the system integrator's responsibility to ensure no
more than one power supply unit is or can be attached to the board at any
time and to ensure the external DC jack is covered if the internal 2 x 2 power
connector is to be used.
could result in potential damage to the desktop board, power supplies, or
other hardware.
chosen by the integrator, as well as end user expansion preferences. It is
the system integrator's responsibility to ensure an appropriate power budget
for the system configuration is properly assessed based on the system-level
components chosen.
AMP_CON
PIN 1
EMB-Q87A