23 ARK-1123 User Manual
Chapter 2 Hardware Installation
2.5.8 DIO Connector
ARK-1123L offers an 8-bit DIO connector and one ground pin. Each bit of DIO can be
set as digital input or output independently. The direction of each bit can be set via
Advantech SUSI utility.
2.5.9 HDD LED Indicator
HDD LED indicator on ARK-1123L front metal face plate for indicating system status:
HDD LED is for HDD flash disk status.
Table 2.18: DIO Connector Pin Assignments
Pin Signal Name
1 DIO bit0
2 DIO bit1
3 DIO bit2
4 DIO bit3
5 DIO bit4
6 DIO bit5
7 DIO bit6
8 DIO bit7
9GND