User`s manual

SBC86831 Series All-In-One Mini ITX Board User’s Manual

Jumpers and Connectors

2.4.5 VGA & Serial Port 1 Connectors: CN7A, CN7B

CN7 is double deck D-Sub connector. The upper is a standard 9-pin

pin DB9 connector for the Serial port 1(CN7A).

CN7A is RS-232/422/485, jumper selectable with auto flow control

features. All four ports feature +5V/12V power capability on DCD and

RI, depending on the jumper setting.

CN7B is a standard 15-pin pin DB15 connector commonly used for the

CRT VGA display.

Pin Signal

1 Data Carrier Detect (DCD)

2 Receive Data (RXD)

3 Transmit Data (TXD)

4 Data Terminal Ready (DTR)

5 Ground (GND)

6 Data Set Ready (DSR)

7 Request to Send (RTS)

8 Clear to Send (CTS)

9 Ring Indicator (RI)

CN7A

Signal

1 Red

2 Green

3 Blue

4 N.C

5 Ground (GND)

AnalogGround（AGND）

9 N.C

10 Ground (GND)

11 N.C

12 DDC DATA

13 Horizontal Sync

14 Vertical Sync

15 DDC CLK

CN7B