INSTALLATIONS

CN1: PS/2 Keyboard and PS/2 Mouse Connectors

PS/2 Mouse

PS/2 Keyboard

 

Keyboard

Mouse

Signal Name

Signal Name

 

 

 

Keyboard data

1

1

Mouse data

N.C.

2

2

N.C.

GND

3

3

GND

5V

4

4

5V

Keyboard clock

5

5

Mouse clock

N.C.

6

6

N.C.

CN2: 4-port USB Connector

CN2 is a USB connector consisting of four ports stacked vertically.

 

 

 

 

 

 

Pin

 

 

Signal Name

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

Ground

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

 

USB+

 

 

CN2

 

3

 

 

USB-

 

 

 

4

 

 

Vcc

 

 

 

 

 

 

 

 

 

 

CN3, J3: Serial Ports

CN3 (COM1) is a DB-9 connector, while J3 is a COM2 pin-header connector. COM2 is optionally available as a DB-9 connector (CN5).

COM1

 

COM2

 

Signal Name

Pin #

Pin #

Signal Name

DCD, Data carrier detect

1

6

DSR, Data set ready

RXD, Receive data

2

7

RTS, Request to send

TXD, Transmit data

3

8

CTS, Clear to send

DTR, Data terminal ready

4

9

RI, Ring indicator

GND, ground

5

10

Not Used

14

MB820 User’s Manual

Page 18
Image 18
Intel MB820 user manual CN1 PS/2 Keyboard and PS/2 Mouse Connectors, CN2 4-port USB Connector, CN3, J3 Serial Ports