I/O Board; Bridge Battery - NEC VERSA 2600 Service Manual

Technical Information 1-13

I/O Board

The system I/O board contains peripheral subsystems including serial, parallel and video
ports, PC card controller and charger.
Figure Section 1-10 I/O Board layout

Bridge Battery

The NiMH battery (3.6 Volts, 60 mAh capacity) is attached to CN23 on the underside of
the Main board. It provides battery backup and prevents data loss in the system's comple-
mentary metal oxide semiconductor (CMOS) RAM. This memory area contains information
on the system's configuration like date, time, drives, and memory. The bridge battery also
provides power for main battery swapping, while in suspend mode. The bridge battery lasts
approximately two years.