Intel D945GCZ manual Connecting USB 2.0 Headers, Connecting Ieee 1394a Headers Optional

Installing and Replacing Desktop Board Components

Connecting USB 2.0 Headers

Before connecting the USB 2.0 headers, observe the precautions in "Before You Begin" on page 25. See Figure 20, C on page 41 for the location of the black USB 2.0 headers. Table 10 shows the pin assignments for the USB 2.0 headers.

Table 10. USB 2.0 Header Signal Names

	USB Port A
Pin	Signal Name
1	POWER
3	D-
5	D+

7GND

9KEY

	USB Port B
Pin	Signal Name
2	POWER

4D-

6D+

GND Ground

10NO CONNECT

Note: USB ports may be assigned as needed.

Connecting IEEE 1394a Headers (Optional)

Before connecting the IEEE 1394a headers, observe the precautions in "Before You Begin" on page 25. See Figure 20, D on page 41 for the location of the blue IEEE 1394a headers.

Table 11 shows the pin assignments for the headers.

Table 11. IEEE 1394a Header Signal Names

Pin	Signal Name
1	TPA1+
3	GND
5	TPA2+
7	+12 V
9	KEY (no pin)

Pin	Signal Name
2	TPA1-
4	GND
6	TPA2-

8+12 V

10GND

Connecting the Front Panel Header

Before connecting the front panel header, observe the precautions in "Before You Begin" on page 25. See Figure 20, F on page 41 for the location of the multi-colored front panel header.

Table 12 shows the pin assignments for the front panel header.

Table 12. Front Panel Header Signal Names

Pin	Signal	In/Out	Description
	Hard Drive Activity LED (Orange)
1	HD_PWR	Out	Hard disk LED pull-
			up (330 Ω) to +5 V
3	HDA#	Out	Hard disk active LED

Reset Switch (Purple)

5	GND		Ground
7	FP_RESET#	In	Reset switch
9	N/C		Not connected

Pin	Signal	In/Out	Description
	Power LED (Green)
2	HDR_BLNK_GRN	Out	Front panel green
			LED
4	HDR_BLNK_YEL	Out	Front panel yellow
			LED

On/Off Switch (Red)

6	SWITCH_ON#	In	Power switch
8	GND		Ground
10	No pin		No pin

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