Specifications
Intel Desktop Board DG965OT Technical Product Specification 
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2.6  DMA Channels................................................................................. 49 
2.7  PCI Interrupt Routing Map ................................................................ 49 
2.8  Connectors and Headers................................................................... 50 
2.8.1  Back Panel Connectors .......................................................... 51 
2.8.2  Component-side Connectors and Headers ................................ 52 
2.9  Jumper Block .................................................................................. 60 
2.10 Mechanical Considerations ................................................................ 61 
2.10.1  Form Factor......................................................................... 61 
2.10.2  I/O Shield ........................................................................... 62 
2.11 Electrical Considerations................................................................... 64 
2.11.1  DC Loading.......................................................................... 64 
2.11.2  Fan Header Current Capability................................................ 64 
2.11.3  Add-in Board Considerations .................................................. 65 
2.11.4  Power Supply Considerations ................................................. 65 
2.12 Thermal Considerations.................................................................... 66 
2.13 Reliability ....................................................................................... 68 
2.14 Environmental ................................................................................ 69 
3  Overview of BIOS Features 
3.1  Introduction ................................................................................... 71 
3.2  BIOS Flash Memory Organization....................................................... 72 
3.3  Resource Configuration .................................................................... 72 
3.3.1  PCI Autoconfiguration ........................................................... 72 
3.3.2  PCI IDE Support................................................................... 73 
3.4  System Management BIOS (SMBIOS)................................................. 73 
3.5  Legacy USB Support ........................................................................ 74 
3.6  BIOS Updates ................................................................................. 74 
3.6.1  Language Support ................................................................ 75 
3.6.2  Custom Splash Screen .......................................................... 75 
3.7  BIOS Recovery................................................................................ 75 
3.8  Boot Options................................................................................... 76 
3.8.1  CD-ROM Boot ...................................................................... 76 
3.8.2  Network Boot....................................................................... 76 
3.8.3  Booting Without Attached Devices........................................... 76 
3.8.4  Changing the Default Boot Device During POST ........................ 76 
3.9  Adjusting Boot Speed....................................................................... 77 
3.9.1  Peripheral Selection and Configuration..................................... 77 
3.9.2  BIOS Boot Optimizations ....................................................... 77 
3.10 BIOS Security Features .................................................................... 78 
4  Error Messages and Beep Codes 
4.1  Speaker ......................................................................................... 79 
4.2  BIOS Beep Codes ............................................................................ 79 
4.3  BIOS Error Messages ....................................................................... 79 
4.4  Port 80h POST Codes ....................................................................... 80 










