Installing and Replacing Desktop Board Components

Connecting Internal Headers

Before connecting cables to the internal headers, observe the precautions in "Before You Begin" on page 23. Figure 20 shows the location of the internal headers.

F

Port1L

1

2

GND

Port1R

3

4

Presence#

Port2R

5

6

Sense1_Ret

 

Sense_Send

7

 

Key (no pin)

Port2L

9

10

Sense2_Ret

E

 

1394 a

 

TPA1+

1

2

TPA1-

Ground

3

4

Ground

TPA2+

5

6

TPA2-

+12 V

7

8

+12 V

Key

 

10

Ground

(no pin)

 

 

 

 

USB A

 

 

USB B

 

Power (+5V)

1

2

Power (+5V)

D

D-

3

4

D-

D+

5

6

D+

 

Ground

7

8

Ground

 

Key (no pin)

 

10

N/C

 

 

9

 

No Connection

 

8

7

 

Reset

C

On/Off

5

 

6

 

 

4

3

 

 

 

 

HD LED

Power LED

1

 

 

2

 

 

B

3

1

Item Description

AChassis intrusion

BAlternate power LED

CFront panel

DUSB 2.0 (two)

EIEEE-1394a (two)

FFront panel audio

A

1 2

OM17676

Figure 20. Internal Headers

39

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Image 39
Intel D945PVS manual Connecting Internal Headers, Item Description