- 20 -
Ground 32
31
Ground
5V_S5_USB
34 33
5V_S5_USB
USB9_N
36 35
USB8_N
USB9_P
38 37
USB8_P
USB9
(USB2.0)
Ground 40
39
Ground
USB8
(USB2.0)
Pin1- Ground:
HDD LED
, They are used to connect hard disk activity LED. The LED
blinks when the hard disk is reading or writing data.
Pin2- Pin4:
POWER LED
, They are used to connect power LED. When the system is
powered on or under S0/S1 state, the LED is normally on, when the system is
under S4/S5 state, the LED is off.
Pin3:
USB01 OC-
, “USB01_OC-“ Signal.
Pin5:
USB67 OC-
,“USB67_OC-“ Signal.
Pin7- Ground:
RESET Button
, They are used to connect reset button. The two pins
are disconnected under normal condition. You may short them temporarily to
realize system reset.
Pin6- Pin8:
POWER on/off Button
, They are used to connect power switch button.
The two pins are disconnected under normal condition. You may short them
temporarily to realize system startup & shutdown or awaken the system from
sleep state.
Pin9- Pin10:
BUZZER
, They are used to connect an external buzzer.
Pin11~Pin18:
GPIO IN/GPIO OUT,
General-purpose input/output port, it provides a
group of self-programming interfaces to customers for flexible use.
Pin19~Pin24:
PS2 KB/MS,
PS/2 keyboard and mouse port, the port can be connected to
PS/2 keyboard and mouse via a dedicated cable for direct used.
Pin25~40:
USB6/USB7/USB8/USB9
, Front USB connector, it provides 4 USB2.0 ports
via a dedicated USB cable, speed up to 480Mbps.
Note:
When connecting LEDs and buzzer and GPIO and USB, pay special attention to the
signal polarity. Make sure that the connector pins have a one-to-one correspondence
with chassis wiring, or it may cause boot up failure.
35. SATA_P1/SATA_P3:
(2.5mm Pitch 1x2 Pin wafer Connector), Two onboard 5V output connectors are reserved
to provide power for SATA devices.
Pin# Signal
Name
1
+DC5V
（
output
）
2 Ground
Note:
Output current of the connector must not be above 1A.
36. SATA_P2:
