DQ43AP Technical Product Specification

Technical Reference

Table 15. Chassis Intrusion Header

Pin Signal Name

1 Intruder

2 Ground

Table 16. Front, Rear, and Processor (4-Pin) Fan Header

Pin Signal Name

1 Ground

2 +12 V

3 FAN_TACH

4 FAN_CONTROL

2.2.2.2 Add-in Card Connectors

The board has the following add-in card connectors:

• PCI Express x1: one PCI Express x1 connector. The x1 interface supports

simultaneous transfer speeds up to 250 MB/s of peak bandwidth per direction and

up to 500 MB/s concurrent bandwidth

• PCI Conventional (rev 2.3 compliant) bus: two PCI Conventional bus add-in card

connectors.

Note the following considerations for the PCI Conventional bus connectors:

• The PCI Conventional bus connectors are bus master capable.

• SMBus signals are routed to the PCI Conventional bus connectors. This enables

PCI Conventional bus add-in boards with SMBus support to access sensor data on

the desktop 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.