HP Kayak XU04 Supplementary Manual page 31

NOTE
5 The system board has two processor sockets.
a If you are changing the existing (boot) processor, remove it from
the socket by gently pulling the processor away from the system
board by the processor's handle. Then gently insert the new boot
processor.
b If you are installing a second (dual) processor, remove the
terminator from the processor's socket and gently insert the
processor (the processor can only go in one way).
If you want to install a faster processor, remove the one supplied with
your PC Workstation. If two processors are installed, ensure that both
have the same speed (frequency) and cache size (indicated on the side
of the processor).
6 The system board has three VRM sockets.
a If only one processor is installed (in the boot processor socket),
insert a VRM into VRM1 and VRM2.
b If two processors are installed, insert a third VRM into
VRM3.
1 How to Install Accessories In Your HP PC Workstation
Dual Processor 2
Boot Processor 1
Installing a Processor
English 23