Lenovo H420 Desktop User Manual
Page 4

Contents
Overview ...................................................................................... 1
Chapter 1 Locations ................................................................. 5
Locating components ....................................................................5
Locating connectors on the front of the computer..........................6
Locating connectors on the rear of the computer ...........................7
Identifying parts on the system board ..........................................13
Chapter 2 Replacing hardware .............................................. 19
Removing the computer cover .....................................................19
Removing and replacing the front bezel .......................................21
Replacing a memory module .......................................................22
Replacing the hard disk drive .......................................................23
Replacing an optical drive ............................................................24
Replacing the heatsink assembly .................................................26
Replacing a PCI or AGP adapter ..................................................28
Replacing the keyboard and mouse .............................................30
Completing the installation ...........................................................31
Chapter 3 Appendix ................................................................ 33