NEC VERSA P, Service Manual

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Technical Information 1-5
CMOS Battery
The lithium battery provides battery backup (3.0 Volts, 280 mAh) to prevent data loss in
the system’s complementary metal oxide semiconductor (CMOS) RAM. This memory area
contains information on the system’s configuration like date, time, drives, and memory. The
CMOS battery lasts approximately two years.
Bridge Battery
The bridge battery saves the memory contents and system status for up to 5 minutes while
in Suspend mode. It is situated next to the hard disk drive housing. The AC adapter main-
tains voltage in the bridge battery when the system is powered on or off. The bridge battery
provides 6 Volts, 50 mAH.
VersaBay PCMCIA Module Option
The VersaBay PCMCIA module adds two more PCMCIA card slots to the system when
the user is not using the diskette drive or secondary battery. The module installs in the sys-
tem’s diskette drive slot.
Keyboard
The built-in, 83-key keyboard (U.S) or 79-key keyboard (UK and Germany) uses the stan-
dard QWERTY format. The keyboard provides 12 function keys and 8 cursor control keys,
with an Fn key for ROM-based key functions. The numeric keypad is embedded in the stan-
dard key layout.
VersaTrack
The built-in mouse makes it easy to use mouse-driven software such as Windows 3.1. The
buttons on either side of the mouse allow the user to select or deselect menu items.
The VersaTrack is the system's default pointing device unless a PS/2 mouse is installed. If
an external mouse is installed, then the VersaTrack is deactivated.