Technical Reference
53
2.7.2.3 Add-in Card Connectors
The board has the following add-in card connectors:
•
PCI Express x16: one connector supporting simultaneous transfer speeds up to 8 GBytes/sec.
•
PCI Express x1: two PCI Express x1 connectors. The x1 interfaces support simultaneous
transfer speeds up to 500 MBytes/sec.
•
PCI Conventional (rev 2.3 compliant) bus: four PCI Conventional 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 boards. 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.
NOTE
The PCI Express x16 connector is configured to support only a PCI Express x1 link when the
Intel GMA950 graphics controller is enabled.
2.7.2.4 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 26. 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
