NEC VERSA VXi, Service And Reference Manual

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System Overview 1-13
CMOS Battery
This lithium battery (3 Volts, 30 mAH capacity) 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.
The CMOS battery charges when the NEC Versa is connected to AC power. The CMOS battery
may discharge completely if the NEC Versa notebook remains unused for approximately two
months.
Chipsets
The following table provides information on the system chipsets.
System Chipsets
Chip Manufacturer Description
Intel Celeron 600 MHz, 650 MHz,
700 MHz, 750 MHz, or higher
Intel Pentium III 700 MHz, 750 MHz,
800 MHz, 850 MHz, 900 MHz, or
1 GHz (all with SpeedStep)
Intel CPU
82440MX Intel System Controller
FDC37N869 Standard Microsystems Super I/O
Mobility-M1 Ati Video
YMF743 Yamaha Audio
M38813E4 Mitsubishi Keyboard Controller
PCI1420 Texas Instruments PCI CardBus Controller