Essential Edition ™

External Hard Drive

My Life.

My World.

My Book.

®

Which edition is right for you?

Mirror Edition ™

Dual-drive Storage

System with Mirroring

Home Edition ™

External Hard Drive

Mac Edition ™

External Hard Drive

Studio Edition ™

External Hard Drive

Studio Edition II

Dual-drive Storage

System with RAID

World Edition ™

Home Network

Storage

World Edition II

Dual-drive Network

Storage

Gain instant storage

Interface USB 2.0

Software

The safest place for your data

Preserve your precious memories

Instant storage for your Mac

Creative power for your Mac

USB 2.0

Automatic and continuous backup

USB 2.0

FireWire ® 400 eSATA

Automatic and continuous backup

USB 2.0

USB 2.0

FireWire 800

FireWire 400 eSATA

Automatic and continuous backup

Fast, green and

Mac ready

USB 2.0

FireWire 800

FireWire 400 eSATA

Automatic and continuous backup

Backup and storage for all your computers

Gigabit Ethernet

Double-safe backup and storage for all your computers

Gigabit Ethernet

Automatic and continuous backup

Remote access

Automatic and continuous backup

Remote access

Design Glossy black

Blue activity LED

Glossy black

Blue activity LED

Capacity gauge

Dual drive

2 TB

Matte gray

White activity LED

Capacity gauge

Matte black

White activity LED

Silver

White activity LED

Capacity gauge

Silver

White activity LED

Capacity gauge

Dual drive

2 TB

4 TB

Glossy white

White activity LED

Capacity gauge

Glossy white

White activity LED

Capacity gauge

Dual drive

2 TB

4 TB

Capacities 500 GB

1 TB

2 TB

1 TB

2 TB

1 TB

2 TB

500 GB

1 TB

2 TB

5 year

1 TB

2 TB

Limited

Warranty*

2 year 3 year 3 year 2 year 5 year 3 year 3 year

WDH1Uxxxx WDH2Uxxxx WDH1CSxxxx WDH1UxxxxAx WDH1Qxxxx WDH2Qxxxx WDH1NCxxxx WDH2NCxxxx

Western Digital, WD, My Book and the WD logo are registered trademarks in the U.S. and other countries; Essential Edition, Home Edition, Studio Edition, Mirror Edition, and World Edition are trademarks of Western Digital Technologies, Inc. Other marks may be mentioned herein that belong to other companies. Pictures shown may vary from actual product. Product specifications subject to change without notice. As used for storage capacity, one megabyte (MB) = one million bytes,one gigabyte (GB) = one billion bytes, one terabyte (TB) = one trillion bytes. Total accessible capacity varies depending on operating environment and RAID configuration. RAID 0 (striped) accesses the full capacity of the drives. RAID 5 accesses three-fourths of the total capacity for data protection. RAID 1

(mirrored) accesses half of the total capacity for additional data protection. Not all products and capabilities are available in all regions.

© 2009 Western Digital Technologies, Inc. All rights reserved.

* The term of your limited warranty depends on the country in which your product was purchased. Please visit our web site at http:support.wdc.com/warranty for the detailed terms and conditions of our limited warranty and for a list of the specific countries in these regions.

4178-705008-010 July 2009