NEC VERSA S5500 Series User Manual page 32

The CMOS battery provides power to maintain system configuration settings.
This battery provides battery backup and prevents data loss in the system's complementary metal-oxide
semiconductor (CMOS) RAM. This memory area contains information on the system's configuration, for
example, date, time, drives and memory.
Please contact your service representative or your Technical Support Centre if this CMOS battery needs to
be replaced.
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