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Intel Desktop Board DG43NB Technical Product Specification
2.2.2.2
Add-in Card Connectors
The board has the following add-in card connectors:
•
One PCI Express 2.0 x16 connector:
⎯ Supports PCI Express 1.1 frequency of 1.25 GHz resulting in 2.5 Gb/s each
direction (500 MB/s total). The maximum theoretical bandwidth on the
interface is 4 GB/s in each direction simultaneously, for an aggregate of 8 GB/s
when operating in x16 mode.
⎯ Supports PCI Express 2.0 frequency of 2.5 GHz resulting in 5.0 Gb/s each
direction (1000 MB/s total). The maximum theoretical bandwidth on the
interface is 8 GB/s in each direction simultaneously, for an aggregate of
16 GB/s when operating in x16 mode.
•
PCI Express x1: three PCI Express x1 connectors. The x1 interfaces support
simultaneous transfer speeds up to 250 Mbytes/sec of peak bandwidth per
direction and up to 500 MB/sec concurrent bandwidth.
•
PCI Conventional (rev 2.3 compliant) bus: three 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.
2.2.2.3
Auxiliary 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 21. Auxiliary Front Panel Power/Sleep LED Header
Pin
Signal Name
1
HDR_BLNK_GRN
2
Not connected
3
HDR_BLNK_YEL
48
In/Out
Description
Out
Front panel green LED
Out
Front panel yellow LED
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