Intel DG35EC Alternate Front Panel Power LED Header, USB 2.0 Headers, USB 2.0 Header Signal Names

Installing and Replacing Desktop Board Components

Alternate Front Panel Power LED Header

Figure 23, F shows the location of the alternate front panel power LED header. Pins 1 and 3 of this header duplicate the signals on pins 2 and 4 of the front panel header. If your chassis has a three-pin power LED cable, connect it to this header. Table 9 shows the pin assignments for the alternate front panel header.

Table 9. Alternate Front Panel Power LED Header

Pin	Description	In/Out
1	Front panel green LED	Out
2	No pin
3	Front panel yellow LED	Out

USB 2.0 Headers

See Figure 23, G for the location of the three USB 2.0 headers. Table 10 shows the pin assignments for each USB 2.0 header. Each USB header can be used to connect two USB devices.

Table 10. USB 2.0 Header Signal Names

	USB Port A
Pin	Signal Name
1	Power (+5 V)
3	D-
5	D+

7Ground

9Key

	USB Port B
Pin	Signal Name
2	Power (+5 V)
4	D-
6	D+
8	Ground
10	No Connection

Note: USB ports may be assigned as needed.

NOTE

Computer systems that have an unshielded cable attached to a USB port might not meet FCC Class B requirements, even if no device or a low-speed USB device is attached to the cable. Use a shielded cable that meets the requirements for a full-speed USB device.

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