AR-B8172 User Manual
10
2.2 Connectors and Jumper Setting
2.2.1 Locations (Top side)
LED1/LED2
System/HDD Status LED (On board)
RST_BTN1
System Reset Button
CCMOS
Clear CMOS data
LED3/LED4
System/HDD Status LED Connector
PWR1
AT Power Input
ATX1
ATX Power Supply Connector
JP1
RS-232/422/485 Selection
with RS-485 termination resistor
SW4
SRAM Address Selection Switch
ATX_BTN1
ATX Power-ON Button
COM2
RS-232 Connector
USB1
USB 0/1 Connector
GPIO1
GPIO 0/1 Connector
CN7
RS-422/485 Connector
(Signal shared from COM2)
USB2
USB 2/3 Connector
KB_MS1
Keyboard/Mouse Connector
CN3
Reserved
CN4
Buzzer Connector (from BZ1)
