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J8: com4 serial port, J9: case open detect header, J10: atx power connector – Intel MB875 User Manual

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INSTALLATIONS


J8: COM4 Serial Port



Pin #

Signal Name (RS-232)

1

DCD, Data carrier detect

2

RXD, Receive data

3

TXD, Transmit data

4

DTR, Data terminal ready

5 Ground
6

DSR, Data set ready

7

RTS, Request to send

8

CTS, Clear to send

9

RI, Ring indicator

10 No

Connect.


J9: Case Open Detect Header

Pin #

Signal Name

1

Case Open Detect

2 Ground


J10: ATX Power Connector

11 1

20 10

Signal Name

Pin #

Pin #

Signal Name

3.3V 11

1 3.3V

-12V 12

2 3.3V

Ground 13

3 Ground

PS-ON 14

4 +5V

Ground 15

5 Ground

Ground 16

6 +5V

Ground 17

7 Ground

-5V 18

8

Power

good

+5V 19

9 5VSB

+5V 20

10 +12V








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MB890 User’s Manual

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