Intel DG33BU specifications Add-in Card Connectors, Auxiliary Front Panel Power/Sleep LED Header

Technical Reference

Table 16. Front Panel Audio Header

Pin	Signal Name
1	[Port 1]	Left channel
3	[Port 1]	Right channel
5	[Port 2]	Right channel
7	SENSE_SEND (Jack detection)
9	[Port 2]	Left channel

Pin	Signal Name
2	Ground
4	PRESENCE# (Dongle present)
6	[Port 1] SENSE_RETURN
8	Key (no pin)
10	[Port 2] SENSE_RETURN

2.2.2.2Add-in Card Connectors

The board has the following add-in card connectors:

•One PCI Express x16 connector supporting simultaneous transfer speeds up to

4 GBytes/sec of peak bandwidth per direction and up to 8 GBytes/sec concurrent bandwidth.

•PCI Express x1: one PCI Express x1 connector. The x1 interface supports simultaneous transfer speeds up to 250 Mbytes/sec of peak bandwidth per direction and up to 500 MBytes/sec concurrent bandwidth.

•PCI Conventional (rev 2.3 compliant) bus: two PCI Conventional bus add-in card connectors. The SMBus is routed to all PCI Conventional bus connectors. PCI Conventional bus add-in cards with SMBus support can access sensor data and other information residing on the board.

Note the following considerations for the PCI Conventional bus connectors:

•All of the PCI Conventional bus connectors are bus master capable.

•SMBus signals are routed to all PCI Conventional bus connectors. This enables PCI Conventional bus add-in boards with SMBus support to access sensor data on the board. The specific SMBus signals are as follows:

⎯The SMBus clock line is connected to pin A40.

⎯The SMBus data line is connected to pin A41.

2.2.2.3Auxiliary Front Panel Power/Sleep LED Header

Pins 1 and 3 of this header duplicate the signals on pins 2 and 4 of the front panel header.

Table 17. Auxiliary Front Panel Power/Sleep LED Header

Pin	Signal Name	In/Out	Description
1	HDR_BLNK_GRN	Out	Front panel green LED
2	Not connected
3	HDR_BLNK_YEL	Out	Front panel yellow LED

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