Intel Desktop Board DH61WW Technical Product Specification 
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Table 18.  Chassis Intrusion Header 
Pin  Signal Name 
1  Intruder# 
2  Ground 
 
 
Table 19.  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:  one PCI Express 2.0 x1 connector.  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.