Technical Reference
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2.2.2.2 Add-in Card Connectors
The board has the following add-in card connectors:
• PCI Express 2.0 x16: three PCI Express 2.0 x16 connectors supporting
simultaneous transfer speeds up to 8 GB/sec of peak bandwidth per direction and
up to 16 GB/sec concurrent bandwidth.
• PCI Express 1.1 x1: two PCI Express 1.1 x1 connectors. The x1 interface
supports simultaneous transfer speeds up to 250 MB/sec of peak bandwidth per
direction and up to 2 GB/sec concurrent bandwidth.
• Conventional PCI (rev 2.3 compliant) bus: one Conventional PCI bus add-in card
connector. The SMBus is routed to the Conventional PCI bus connector.
Conventional PCI bus add-in cards with SMBus support can access sensor data and
other information residing on the board.
Note the following considerations for the Conventional PCI bus connector:
• The Conventional PCI bus connector is bus master capable.
• SMBus signals are routed to the Conventional PCI bus connector. This enables
Conventional PCI 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 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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