NEC Express5800 series User Manual page 165

Processor (CPU)
The server may have another CPU installed in addition to the standard CPU (Intel Xeon
Processor).
IMPORTANT:
The CPU is extremely sensitive to static electricity. Make sure to
touch the metal frame of the server to discharge static electricity
from your body before handling the CPU. Do not touch the CPU
pins by a bare hand or place the CPU directly on the desk. For static
notes, see the section "Anti-static Measures" described earlier.
Do not operate the system until confirming that the additionally
installed CPU is in normal state.
Make sure to use the CPU authorized by NEC. Installing a
third-party CPU may cause a failure of the CPU as well as the server.
Repair of the server due to failures or damage resulted from
installing such a board will be charged.
NEC CI recommend that you backup all your data before starting to
upgrade your CPU
REAR
If the different revision of the processor is installed in the
NOTE:
multiprocessor system, Windows 2000 logs the following information
every startup. If this message is logged, it is no problem for operation.
Mother board
Upgrading Your NEC Storage 155
Processor 2
Processor 1
FRONT