Datasheet

Technical Reference

Table 23. Main Power Connector

Pin Signal Name Pin Signal Name

1 +3.3 V 13 +3.3 V

2 +3.3 V 14 -12 V

3 Ground 15 Ground

4 +5 V 16 PS-ON# (power supply remote on/off)

5 Ground 17 Ground

6 +5 V 18 Ground

7 Ground 19 Ground

8 PWRGD (Power Good) 20 No connect

9 +5 V (Standby) 21 +5 V

10 +12 V 22 +5 V

11 +12 V

(Note)

23 +5 V

(Note)

12 2 x 12 connector detect

(Note)

24 Ground

(Note)

Note: When using a 2 x 10 power supply cable, this pin will be unconnected.

Table 24. ATX12V Power Connector

Pin Signal Name Pin Signal Name

1 Ground 2 Ground

3 +12 V 4 +12 V

2.8.2.2 Add-in Card Connectors

The board has the following add-in card connectors:

• One PCI Express x1 connector. The x1 interfaces support simultaneous transfer speeds up to

500 MBytes/sec

• Two PCI Conventional rev 2.2 compliant local bus slots. 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

Desktop 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.