Lenovo B520 77452FU User Manual
Product codes
77452FU
Availability: All offers subject to avail-
ability. Lenovo reserves the right to alter
product offerings and specifi cations at
any time, without notice. Lenovo is not
responsible for photographic or typo-
graphic errors.
product offerings and specifi cations at
any time, without notice. Lenovo is not
responsible for photographic or typo-
graphic errors.
Warranty: For a copy of applicable
product warranties, write to: Warranty In-
formation, P.O. Box 12195, RTP, NC, 27709,
Attn: Dept ZPYA/B676. Lenovo makes no
representation or warranty regarding third
party products or services.
formation, P.O. Box 12195, RTP, NC, 27709,
Attn: Dept ZPYA/B676. Lenovo makes no
representation or warranty regarding third
party products or services.
1
Limited warranty:
Support unrelated to
a warranty issue may be subject to ad-
ditional charges.
ditional charges.
2
Hard disk drive:
GB = billion bytes, TB =
trillion bytes. Accessible capacity is less;
up to 4GB is service partition.
up to 4GB is service partition.
3
Customer Replacement Units (CRUs)
are designed to be replaced by custom-
ers during the applicable warranty pe-
riod. Lenovo will send a technician onsite
to perform a repair if remote telephone
diagnosis does not isolate the problem,
if customer replaceable parts are unable
to resolve the problem, or at the request
of the customer. For a list of customer
replaceable parts, contact Lenovo. Sup-
port unrelated to a warranty issue may
be subject to additional charges.
ers during the applicable warranty pe-
riod. Lenovo will send a technician onsite
to perform a repair if remote telephone
diagnosis does not isolate the problem,
if customer replaceable parts are unable
to resolve the problem, or at the request
of the customer. For a list of customer
replaceable parts, contact Lenovo. Sup-
port unrelated to a warranty issue may
be subject to additional charges.
4
Wireless capability:
Requires com-
patible wireless-enabled options sold
separately.
separately.
5
Included software may differ from its
retail version (if available), and may not
include user manuals or all program
functionality. License agreements may
apply.
include user manuals or all program
functionality. License agreements may
apply.
7
Maximum memory capacity
may
require the replacement of standard
component with largest supported
component with largest supported
component available. On ThinkPad
systems, even though it is possible to
systems, even though it is possible to
physically install 4GB of memory, the ac-
tual amount of memory addressable by
a 32-bit operating system will be limited
to 3GB. This limitation does not exist with
64-bit operating systems.
tual amount of memory addressable by
a 32-bit operating system will be limited
to 3GB. This limitation does not exist with
64-bit operating systems.
8
Memory: For PCs without a separate
video card, memory supports both
system and video. Accessible system
memory is less than the amount stated,
depending on video mode.
system and video. Accessible system
memory is less than the amount stated,
depending on video mode.
9
Service upgrade options: Service
period begins with the equipment date
of purchase. Service must be purchased
during the original limited product war-
of purchase. Service must be purchased
during the original limited product war-
rantyperiod. Service levels are response
time objectives and are not guarantees.
1 0
Modem speeds: Public network
download speeds are limited to 53Kbps.
Upload speeds are limited to 48Kbps for
V.92 modems. Actual speeds depend on
many factors and are often less than the
maximum possible. V.92 functions and
speeds require compatible phone line
Upload speeds are limited to 48Kbps for
V.92 modems. Actual speeds depend on
many factors and are often less than the
maximum possible. V.92 functions and
speeds require compatible phone line
and server equipment. Check with your
telephone and ISP service providers for
availability.
availability.
14
Response times may vary. May exclude
some holidays. Telephone support may
be subject to additional charges.
be subject to additional charges.
20
Operating System:
Level of support var-
ies by operating system. Operating sys-
tems not preloaded on the system may
not provide full feature functionality. Refer
to lenovo.com/pc/support and enter your
machine type and model number for
more information.
tems not preloaded on the system may
not provide full feature functionality. Refer
to lenovo.com/pc/support and enter your
machine type and model number for
more information.
28
The IEEE 802.11n specifi cation
(MIMO)
(MIMO)
has been fi nalized and is
currently in IEEE 802.11n-2009 release.
The maximum speed depends on the
access point device and the number of
integrated antenna used for connection.
An adapter with 11a/b, 11a/b/g, 11b/g/n, or
11a/b/g/n can communicate on any of its
supported formats.
The maximum speed depends on the
access point device and the number of
integrated antenna used for connection.
An adapter with 11a/b, 11a/b/g, 11b/g/n, or
11a/b/g/n can communicate on any of its
supported formats.
This publication was developed for prod-
ucts and services offered in the United
States. Lenovo may not offer the products,
services or features discussed in this
document in other countries. Lenovo may
withdraw an offering at any time. Informa-
tion is subject to change without notice.
Consult your local representative for
information on offerings available in your
area.
States. Lenovo may not offer the products,
services or features discussed in this
document in other countries. Lenovo may
withdraw an offering at any time. Informa-
tion is subject to change without notice.
Consult your local representative for
information on offerings available in your
area.
Lenovo
reserves the right to change spec-
ifi cations and other product information
at any time without prior notice. Lenovo is
not responsible for photographic or typo-
graphical errors. LENOVO PROVIDES THIS
PUBLICATION “AS IS” WITHOUT WAR-
RANTY OF ANY KIND, EITHER EXPRESS
OR IMPLIED, INCLUDING THE IMPLIED
WARRANTIES OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE.
Some jurisdictions do not allow disclaimer
of express or implied warranties in certain
transactions; therefore this disclaimer may
not apply to you.
at any time without prior notice. Lenovo is
not responsible for photographic or typo-
graphical errors. LENOVO PROVIDES THIS
PUBLICATION “AS IS” WITHOUT WAR-
RANTY OF ANY KIND, EITHER EXPRESS
OR IMPLIED, INCLUDING THE IMPLIED
WARRANTIES OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE.
Some jurisdictions do not allow disclaimer
of express or implied warranties in certain
transactions; therefore this disclaimer may
not apply to you.
Trademarks: Lenovo, the Lenovo logo,
New World. New Thinking., Access Con-
nections, Rescue and Recovery, Think-
Vantage, and ThinkVision are trademarks
of Lenovo. Microsoft, Windows, and Vista
are registered trademarks of Microsoft
Corporation. Intel, the Intel logo, Intel
Inside logo, Intel Core and Core Inside
are trademarks of Intel Corporation in the
US and other countries. AMD, the AMD
logo, AMD Athlon, AMD Sempron, and
combinations thereof, are trademarks
of Advanced Micro Devices, Inc. PCI
Express is a trademark of PCI-SIG. Other
company, product, or service names may
be trademarks or service marks of oth-
ers.
nections, Rescue and Recovery, Think-
Vantage, and ThinkVision are trademarks
of Lenovo. Microsoft, Windows, and Vista
are registered trademarks of Microsoft
Corporation. Intel, the Intel logo, Intel
Inside logo, Intel Core and Core Inside
are trademarks of Intel Corporation in the
US and other countries. AMD, the AMD
logo, AMD Athlon, AMD Sempron, and
combinations thereof, are trademarks
of Advanced Micro Devices, Inc. PCI
Express is a trademark of PCI-SIG. Other
company, product, or service names may
be trademarks or service marks of oth-
ers.
Visit
www.lenovo.com/safecomputing
periodically for the latest information on
safe and effective computing.
safe and effective computing.
Visit
www.lenovo.com/psref
for the latest version of
Personal Systems Reference.
Personal Systems Reference.
© Lenovo, 2012.
All rights reserved.
Lenovo
1009
1009
Think
Place
Morrisville, NC 27560
U.S.A.
U.S.A.
January
2012
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