Intel DG33FB Connecting to the Serial Port Header, Connecting to the Chassis Intrusion Header

Installing and Replacing Desktop Board Components

Connecting to the Serial Port Header

See Figure 23, C for the location of the serial port header. Table 6 shows the pin assignments for the header.

Table 6. Serial Port Header Signal Names

Pin	Signal Name
1	DCD
3	TXD#
5	Ground

7RTS

9RI

Pin	Signal Name
2	RXD#
4	DTR
6	DSR
8	CTS
10	No Connection

Connecting to the Chassis Intrusion Header

Figure 23, D on page 45 shows the location of the chassis intrusion header. This header can be connected to a mechanical switch on the chassis to detect if the chassis cover is removed.

Table 8 shows the pin assignments for the chassis intrusion header.

Table 7. Chassis Intrusion Header

Pin Description

1Intruder

2Ground

Connecting to the Alternate Front Panel Power LED Header

Figure 23, E 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 8 shows the pin assignments for the alternate front panel header.

Table 8. 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

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