Internal Connectors - Aaeon IMBM-H81B Manual

2.8.2

Internal connectors

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.
IMBM-H81B ATX power connectors
IMPORTANT:
•
•
2. BIOS programmable connector (8-pin SPI)
Use this connector to flash the BIOS ROM.
IMBM-H81B BIOS Programmable connector
2-18
A
B
IMBM-H81B
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 330W.
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.
IMBM-H81B
A
EATX_PWR2 EATX_PWR1
+3 Volts
+12 Volts
+12 Volts
+5V Standby
Power OK
GND
+5 Volts
PIN 1
GND
+5 Volts
GND
+3 Volts
+3 Volts
PIN 1
SPI_1
(NC) (NC)
SPI_SI_F SPI_SO_F
SPI_CLK_F SPI_CS0#_F
GND +V3.3_SPI
PIN 1
B
GND
+5 Volts
+5 Volts
+5 Volts
-5 Volts
GND
GND
GND
PSON#
GND
-12 Volts
+3 Volts
IMBM-H81B