HP ProDesk 400 G4 SFF

Table of contents
1 Product features ........................................................................................................................................... 1
Standard conguration features ........................................................................................................................... 1
Front panel components ....................................................................................................................................... 2
Rear panel components ......................................................................................................................................... 3
Serial number location .......................................................................................................................................... 3
2 Hardware upgrades ....................................................................................................................................... 4
Serviceability features ........................................................................................................................................... 4
Warnings and cautions .......................................................................................................................................... 4
Removing the computer access panel ................................................................................................................... 5
Replacing the computer access panel ................................................................................................................... 6
Removing the front bezel ...................................................................................................................................... 7
Removing a slim optical drive bezel blank ............................................................................................................ 8
Replacing the front bezel ...................................................................................................................................... 8
Changing from desktop to tower conguration .................................................................................................... 9
System board connectors .................................................................................................................................... 10
Installing additional memory .............................................................................................................................. 11
DIMMs ................................................................................................................................................ 11
DDR4-SDRAM DIMMs ......................................................................................................................... 11
Populating DIMM sockets .................................................................................................................. 11
Installing DIMMs ................................................................................................................................ 12
Removing or installing an expansion card .......................................................................................................... 18
Drive positions ..................................................................................................................................................... 21
Removing and installing drives ........................................................................................................................... 22
Removing a 9.5 mm slim optical drive .............................................................................................. 23
Installing a 9.5 mm slim optical drive ............................................................................................... 24
Removing and replacing a hard drive ............................................................................................... 26
Installing a security lock ...................................................................................................................................... 32
Security cable lock ............................................................................................................................. 32
Padlock .............................................................................................................................................. 32
HP Business PC Security Lock V2 ...................................................................................................... 33
Appendix A Battery replacement ..................................................................................................................... 38
Appendix B Electrostatic discharge .................................................................................................................. 41
Preventing electrostatic damage ........................................................................................................................ 41
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