In Power Connector: Atx1 - AXIOMTEK EP830 Series User Manual

2.4.13 +12V-IN Power Connector: ATX1
Connect the power cable to ATX1 for +12V ATX power supply, which
mainly supplies power to the CPU. If the ATX1 power connector is not
connected, the system will not start.
Pin
1
2
3
4
2.4.14 Serial Port Interface Connectors: COM1, COM2,
COM3, COM4
The board has one onboard serial port COM1 RS-232/422/485, and
three extensive serial ports COM2 ~ 4 RS-232, jumper selectable with
auto flow control features. The +5V/12V power can be used on DCD
and RI for these four ports, depending on the jumper setting.
Pin Description
1 DCD, Data Carrier Detect
2 RXD, Receive Data
3 TXD, Transmit Data
4 DTR, Data Terminal Ready
5 GND, Ground
6 DSR, Data Set Ready
7 RTS, Request To Send
8 CTS, Clear To Send
9 RI, Ring Indicator
Jumpers and Connectors
EP830 All-In-One EPIC Board User's Manual
Description
GND
GND
+12V
+12V
ATX1
COM1
27