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Technical Reference

Table 19. Chassis Intrusion Header

Pin Signal Name

1 Intruder#

2 Ground

Table 20. 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

2.2.2.2 Add-in Card Connectors

The board has the following add-in card connectors:

• PCI Express 2.0 x16: one PCI Express 2.0 x16 connector. This connector supports

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

• PCI Express 2.0 x1: two PCI Express 2.0 x1 connectors. The x1 interface supports

simultaneous transfer speeds up to 1 GB/s of peak bandwidth per direction and up

to 2 GB/s concurrent bandwidth.

• 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.

Intel DH61BE User Manual

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