
Intel Desktop Board DG43NB Technical Product Specification 
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2.3 Jumper Block .................................................................................. 53 
2.4 Mechanical Considerations ................................................................ 54 
2.4.1 Form Factor......................................................................... 54 
2.5 Electrical Considerations................................................................... 55 
2.5.1 Power Supply Considerations ................................................. 55 
2.5.2 Fan Header Current Capability................................................ 56 
2.5.3 Add-in Board Considerations .................................................. 56 
2.6 Thermal Considerations.................................................................... 56 
2.7 Reliability ....................................................................................... 58 
2.8 Environmental ................................................................................ 59 
3Overview of BIOS Features ................................................. 61 
3.1 Introduction ................................................................................... 61 
3.2 BIOS Flash Memory Organization....................................................... 62 
3.3 Resource Configuration .................................................................... 62 
3.3.1 PCI Autoconfiguration ........................................................... 62 
3.3.2 PCI IDE Support................................................................... 63 
3.4 System Management BIOS (SMBIOS)................................................. 63 
3.5 Legacy USB Support ........................................................................ 64 
3.6 BIOS Updates ................................................................................. 65 
3.6.1 Language Support ................................................................ 65 
3.6.2 Custom Splash Screen .......................................................... 66 
3.7 BIOS Recovery................................................................................ 66 
3.8 Boot Options................................................................................... 67 
3.8.1 CD-ROM Boot ...................................................................... 67 
3.8.2 Network Boot....................................................................... 67 
3.8.3 Booting Without Attached Devices........................................... 67 
3.8.4 Changing the Default Boot Device During POST ........................ 67 
3.9 Adjusting Boot Speed....................................................................... 68 
3.9.1 Peripheral Selection and Configuration..................................... 68 
3.9.2 BIOS Boot Optimizations ....................................................... 68 
3.10 BIOS Security Features .................................................................... 69 
4Error Messages and Beep Codes ......................................... 71 
4.1 Speaker ......................................................................................... 71 
4.2 BIOS Beep Codes ............................................................................ 71 
4.3 BIOS Error Messages ....................................................................... 71 
4.4 Port 80h POST Codes ....................................................................... 72 
5Regulatory Compliance and Battery Disposal Information .. 77 
5.1 Regulatory Compliance..................................................................... 77 
5.1.1 Safety Standards.................................................................. 77 
5.1.2 European Union Declaration of Conformity Statement................ 78 
5.1.3 Product Ecology Statements................................................... 79 
5.1.4 EMC Regulations .................................................................. 83 
5.1.5 Product Certification Markings (Board Level)............................. 84 
5.2 Battery Disposal Information............................................................. 85