Intel Desktop Board DQ57TM Technical Product Specification

Technical Reference

Table 19. Processor (4-Pin) Fan Header

Pin Signal Name

1 Ground

2 +12 V

3 FAN_TACH

4 FAN_CONTROL

Table 20. Front and Rear Chassis Fan Headers

Pin 4-Wire Support Pin 3-Wire Support

1 Ground 3 Ground

2 +12 V 2 FAN_POWER

3 FAN_TACH 1 FAN_TACH

4 FAN_CONTROL N/A N/A

Table 21. Intel Remote PC Assist Technology Header

Pin Signal Name

1 RPAT#

2 Ground

2.2.2.2 Add-in Card Connectors

The board has the following add-in card connectors:

• One PCI Express 2.0 x16: this connector supports simultaneous transfer speeds of

up to 8 GB/s of peak bandwidth per direction.

• Two PCI Express 2.0 x1: each of these connectors support simultaneous transfer

speeds of up to 500 MB/s of peak bandwidth per direction.

• One Conventional PCI (rev 2.3 compliant) connector.

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 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.