Toshiba TECRA S4 User Manual page 18

Introduction
Memory
Slots
Video RAM
Legal Footnote (Memory (Main System))
For more information regarding Main Memory, please refer to Chapter 10,
Legal
Power
Battery pack
Legal Footnote (Battery Life)
For more information regarding Battery Life, please refer to Chapter 10,
Legal
RTC battery
AC adaptor
1-4
256, 512, 1,024 or 2,048MB memory modules
can be installed in the computer's two memory
slots for a maximum of 4,096MB system memory.
The graphics controller is equipped with 128MB
external video RAM, and may use up to 128MB
of main system memory as additional video
memory for a combined total of up to 256MB
video memory.
Footnotes.
The computer is powered by one rechargeable
lithium-ion battery pack.
Footnotes.
The internal RTC battery backs up the Real Time
Clock (RTC) and calendar.
The AC adaptor provides power to the system
and recharges the batteries when they are low. It
comes with a detachable power cord which will
either have a 2-pin or 3-pin plug enclosure.
Because it is universal, it can receive a range of
AC voltage from 100 to 240 volts; however, the
output current varies among different models.
Using the wrong model can damage your
computer. Refer to the
Chapter 2,
AC adaptor
The Grand Tour.
section in
User's Manual