Manual

AR-B1841 User’s Guide

AR-B1841

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COM4 : RS-232 with RS-422/485 Serial port(Pin Header)

3.3 Keyboard / Mouse Connector(MS_KB1,2)

A PS/2 type connector(MS_KB1)is for easy connection to a keyboard

and PS/2 mouse. The board comes with a Y split PS/2 cable for

keyboard and mouse connection.

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MS_KB2 : 6-pin Mini-DIN Keyboard/Mouse Connector

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MS_KB1 : Keyboard Mouse PS2 Port

PIN DESCRIPTION PIN DESCRIPTION

1 NDCD 2 NDSR

3 NSIN 4 NRTS

5 NRIB 6 NCTS

7 NSOUT 8 NRI

9 GND 10 GND

11 TX+ 12 TX-

13 RX+ 14 RX-

PIN NO. DESCRIPTION

1 MOUSE DATA

2 KEYBOARD DATA

3 GROUND

4 +5V

5 MOUSE CLOCK

6 KEYBOARD CLOCK

PIN DESCRIPTION PIN DESCRIPTION

1 KB_DAT 2 MS_DAT

3 GND 4 +5V

5 KB_CLK 6 MS_CLK

7 GND 8 GND