Datasheet

Technical Reference
57
2.8.2.2 Add-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.
• Two 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 MBytes/sec concurrent
bandwidth.
• Four PCI Conventional (rev 2.2 compliant) bus add-in card connectors. The SMBus is routed to
PCI Conventional bus connector 2 only (ATX expansion slot 6). 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 PCI Conventional bus connector 2. 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.
2.8.2.3 Auxiliary Front Panel Power/Sleep LED Connector
Pins 1 and 3 of this connector duplicate the signals on pins 2 and 4 of the front panel connector.
Table 24. Auxiliary Front Panel Power/Sleep LED Connector
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