
Intel Desktop Board DH55PJ Product Guide 
vi 
Installing and Removing the Desktop Board ...........................................................28 
Installing and Removing a Processor.....................................................................29 
Installing a Processor ..................................................................................29 
Installing a Processor Fan Heat Sink..............................................................34 
Connecting the Processor Fan Heat Sink Cable................................................34 
Removing the Processor ..............................................................................34 
Installing and Removing System Memory ..............................................................35 
Installing DIMMs ........................................................................................36 
Removing DIMMs........................................................................................38 
Installing and Removing PCI Express x16 Graphics Cards.........................................38 
Installing a PCI Express x16 Graphics Card ....................................................38 
Removing a PCI Express x16 Graphics Card....................................................39 
Connecting Serial ATA (SATA) Cables....................................................................41 
Connecting to the Internal Headers ......................................................................42 
Front Panel Audio Header ............................................................................43 
Internal Mono Speaker Header .....................................................................43 
S/PDIF Header ...........................................................................................44 
Parallel Port Header ....................................................................................44 
Alternate Front Panel Power LED Header ........................................................45 
Front Panel Header .....................................................................................45 
Front Panel USB 2.0 Headers........................................................................46 
Serial Header.............................................................................................47 
Connecting to the Audio System...........................................................................47 
Connecting Chassis Fan and Power Supply Cables...................................................48 
Connecting Chassis Fan Cables .....................................................................48 
Connecting Power Supply Cables ..................................................................49 
Setting the BIOS Configuration Jumper .................................................................50 
Clearing Passwords ............................................................................................51 
Replacing the Battery .........................................................................................52 
3Updating the BIOS 
Updating the BIOS with the Intel®Express BIOS Update Utility.................................59 
Updating the BIOS with the ISO Image BIOS Update File or the Iflash Memory 
Update Utility...............................................................................................60 
Obtaining the BIOS Update File ....................................................................60 
Updating the BIOS with the ISO Image BIOS Update File .................................60 
Updating the BIOS with the Iflash Memory Update Utility .................................61 
Recovering the BIOS...................................................................................62 
AError Messages and Indicators 
BIOS Error Codes...............................................................................................63 
BIOS Error Messages..........................................................................................64 
BRegulatory Compliance 
Safety Standards ...............................................................................................65 
Battery Caution ..........................................................................................65 
European Union Declaration of Conformity Statement..............................................66 
Product Ecology Statements ................................................................................67 
Recycling Considerations .............................................................................67 
China RoHS ...............................................................................................70 
EMC Regulations ................................................................................................71 
FCC Declaration of Conformity......................................................................71