
Intel Desktop Board D945PLRN Technical Product Specification 
vi 
2.7 Connectors...................................................................................................................46 
2.7.1 Back Panel Connectors.................................................................................47 
2.7.2 Component-side Connectors.........................................................................48 
2.8 Jumper Block ...............................................................................................................57 
2.9 Mechanical Considerations..........................................................................................58 
2.9.1 Form Factor...................................................................................................58 
2.9.2 I/O Shield.......................................................................................................59 
2.10 Electrical Considerations..............................................................................................60 
2.10.1 DC Loading....................................................................................................60 
2.10.2 Add-in Board Considerations.........................................................................60 
2.10.3 Fan Connector Current Capability.................................................................61 
2.10.4 Power Supply Considerations .......................................................................61 
2.11 Thermal Considerations...............................................................................................62 
2.12 Reliability......................................................................................................................64 
2.13 Environmental..............................................................................................................65 
2.14 Regulatory Compliance................................................................................................66 
2.14.1 Safety Regulations ........................................................................................66 
2.14.2 European Union Declaration of Conformity Statement..................................66 
2.14.3 Product Ecology Statements.........................................................................68 
2.14.4 EMC Regulations...........................................................................................71 
2.14.5 Product Certification Markings (Board Level)................................................73 
3Overview of BIOS Features 
3.1 Introduction ..................................................................................................................75
3.2 BIOS Flash Memory Organization ...............................................................................76 
3.3 Resource Configuration ...............................................................................................76 
3.3.1 PCI Autoconfiguration....................................................................................76 
3.3.2 PCI IDE Support............................................................................................76 
3.4 System Management BIOS (SMBIOS) ........................................................................77 
3.5 Legacy USB Support....................................................................................................77 
3.6 BIOS Updates..............................................................................................................78 
3.6.1 Language Support.........................................................................................78 
3.6.2 Custom Splash Screen..................................................................................78 
3.7 Boot Options ................................................................................................................79 
3.7.1 CD-ROM Boot ...............................................................................................79 
3.7.2 Network Boot.................................................................................................79 
3.7.3 Booting Without Attached Devices................................................................79 
3.7.4 Changing the Default Boot Device During POST..........................................79 
3.8 Adjusting Boot Speed...................................................................................................80 
3.8.1 Peripheral Selection and Configuration.........................................................80 
3.8.2 BIOS Boot Optimizations...............................................................................80 
3.9 BIOS Security Features ...............................................................................................81 
4Error Messages and Beep Codes 
4.1 Speaker........................................................................................................................83 
4.2 BIOS Beep Codes........................................................................................................83 
4.3 BIOS Error Messages..................................................................................................83 
4.4 Port 80h POST Codes .................................................................................................84