AAEON EMB-H81A - Manual (Page 28)

EMB-H81A 2-20
CAUTION: Do not forget to connect the fan cables to the fan connectors.
Insufficient air flow inside the system may damage the motherboard
components. These are not jumpers! Do not place jumper caps on the fan
connectors!
NOTE: The CPU_FAN connector supports a CPU fan of maximum 2A (24 W)
fan power.
2. CPU and chassis fan connectors (4-pin CPU_FAN1, 4-pin CHA_FAN1)
Connect the fan cables to the fan connectors on the motherboard, ensuring
that the black wire of each cable matches the ground pin of the connector.
EMB-H81A Fan connectors
CHA_FAN1
GND
VCC
SENSE
PWM
CPU_FAN1
PWM
SENSE
VCC GND
EMB-H81A DIO connector
PIN 1
DIO
GPIO50(DIO_P#1) GPIO53 (DIO_P#3) GPIO55 (DIO_P#5) GPIO57(DIO_P#7)
+5V
GPIO51 (DIO_P#2) GPIO54(DIO_P#4) GPIO56(DIO_P#6) GPIO58 (DIO_P#8) GND
3. Digital I/O connector (10-pin DIO)
This connector includes 8 I/O lines. All of the Digital I/O lines are
programmable and each I/O pin can be individually programmed to support
various devices.
NOTE: To configure the I/O pins in BIOS, click Advanced tab > SIO GPIO >
GPIO 50~57. See section 3.4.6 SIO GPIO for details.