3900/3950HD/3950C  (250-3580/86/87)      Features       Faxback Doc. # 2578

This document provides information on how to use the computer's features
and how you can attach accessory equipment to expand the computer's basic
capabilities.

Your Notebook includes the following features:

 A 25MHz 80386SX / CX486SLC Microprocessor

 A 1.44MB Floppy Disk Drive

This disk drive can use either 720KB (KILOBYTE) "Double Density" or 1.44MB
(megabyte) "High Density" 3.5-inch floppy diskettes.  You can store your
data and programs on them and use them from the floppy diskette.  However,
since the Notebook has a hard disk as standard equipment you will probably
want to use the hard disk for this.  Floppy diskettes are useful for
making backups of your program diskettes and data files.  (Also, anytime
you want to load new software onto the hard disk you use the floppy drive
to transfer the software from the floppy diskettes where the program is
located.)

 Hard Disk Drive Size

The Notebook comes with a hard disk installed.

 10-inch LCD VGA Display (Mono only, for the 3900/3950HD)

The Notebook has a 10-inch, 64 gray scale, VGA, back-lit display that
normally shows characters black on white.

 82-key QWERTY Enhanced Keyboard

The Notebook's keyboard uses a standard QWERTY layout with the addition
of keys special to the computer's function.

A numeric keypad is incorporated into the main keyboard to allow you to
conveniently enter numerical data.

 Connectors For Other Equipment.

The Notebook has a number of connector ports for equipment you can attach
to the computer, including the following:

 A connector for a full-size keyboard

 A connector for a standard VGA or multifrequency monitor, either black and
 white or color.

 A standard 9-pin serial port to which you can attach a variety of serial
 devices, such as a mouse or modem.

 A 25-pin parallel port which is most commonly used to connect a printer
 or external floppy device to the computer.

 Combined Battery Power System

To power the Notebook, you can use an AC adapter plugged into a wall
outlet or the rechargeable nickel-cadmium battery packs.  The battery
packs provide power when it is inconvenient to use the adapter as a power
source.  Please note, you can use the batteries and AC adapter at the same
time, because the system automatically defaults to the AC adapter source
and simultaneously recharges the battery packs.  Using the "power
management" features described in Section 5, the computer can run on
battery power for approximately 3.5 hours.  The battery packs recharge
consecutively in about 3.5 to 4 hours.  Please note, extra battery packs
can be purchased separately to increase the convenience of using the
computer while away from an AC power source.

 Upgradeable System Memory.

The Notebook comes with 2MB (4MB for the 3950HD/3950C You can add more
if you require it.  You can install up to 8MB of memory in these Notebooks.

 Special Software Features

The Notebook has a number of software features that are a permananent part
of the computer's operation.  Some affect the LCD video display, while
others provide a set of "Power Management" features which help to extend
the computer's operating time while using the battery power source.

 Power on/off switch

 Brightness control

 Contrast control

 Suspend/Resume switch

STANDARD ACCESSORIES

 AC adapter

 Internal FAX and/or Data modem

 Additional battery packs

 2/4/6MB Memory card

 Track-ball

BATTERY

 2 Rechargeable Ni-Cd battery packs

 2.5 operation hours*

 3.5 - 4 hours fast charge*

NOTE:  Specifications are subject to change without notice.

 May vary depending on operating temperature, battery condition, and
 power management features.

POWER MANAGEMENT

 System activity monitor

 Automatic transition between modes
 (active/doze/sleep)

 Other intelligent power management technology

(smc-02/18/94)