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DVR Expander
Make room for more TV shows, movies, and sporting events. With a DVR expander, you gain instant additional storage so that you can record more and delete less.

Make room for more TV shows, movies, and sporting events. With a DVR expander, you gain instant additional storage so that you can record more and delete less.

  • 1 TB

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Love your DVR but hate the storage limits? You’re going to love WD’s My Book AV DVR Expander. It’s an external storage device that works with your compatible DVRs to expand your storage capacity. Larger storage capacity means you can record many more hours of TV! Please note: The DVR Expander only works wiht certain DVRs and only in markets which supports the DVR Expander.

Comcast Customers: Before purchasing, please click here to determine if you have a compatible DVR and if you are located in a Comcast market which supports the DVR Expander. This product is not compatible with Comcast’s X1 Platform.
Regular Price: $109.99
Promo Price: $99.99


Make room for moreTV shows.

Instantly add more recording hoursto your DVR.



My Book AV with exclusive SilkStream technology delivers smooth video recording and playback and is optimized for the demands of reading and writing video in high-temperature entertainment center environments.

High-capacity DVR expander.

Connect the drive to your compatible USB or eSATA DVR to instantly create more storage for your TV shows, sporting events, and movies.

Store media for seamless playback on your TV.

Connect this AV-optimized drive to a game console, Blu-ray Disc player, or media player, like WD TV Live, to enjoy your media on your big screen TV.

Small enough to fit in your entertainment center.

The small My Book form factor fits neatly in your entertainment center. It can stand upright or lay horizontally, making it easy to neatly position your drive near your AV devices while maximizing airflow and minimizing heat around the drive.

A companion for your camcorder.

Transfer and store videos from your compatible camcorder without a computer, so you can record more and delete less.

Maximum flexibility.

My Book AV has both USB 2.0 and eSATA interfaces so your drive is compatible with most DVRs and other AV devices.

Disclaimer: When used with a DVR, the My Book AV drive expands the recording capacity of a single DVR and cannot be also used as an expander with multiple DVRs or as storage for other AV devices.

Carrying Cases
My Book Side Opening Case
Performance Specifications
Serial Transfer Rate
Serial Bus Transfer Rate (eSATA)3 Gb/s (Max)
Physical Specifications
Capacity1 TB
InterfaceDual Interface (eSATA)
Physical Dimensions
Height6.50 Inches
Length5.3 Inches
Width1.9 Inches
Weight2.60 Pounds
Height165 mm
Length135 mm
Width48.0 mm
Weight1.18 kg
As used for storage capacity, one megabyte (MB) = one million bytes, one gigabyte (GB) = one billion bytes, and one terabyte (TB) = one trillion bytes. Total accessible capacity varies depending on operating environment. As used for buffer or cache, one megabyte (MB) = 1,048,576 bytes. As used for transfer rate or interface, megabyte per second (MB/s) = one million bytes per second, megabit per second (Mb/s) = one million bits per second, and gigabit per second (Gb/s) = one billion bits per second.

System Compatibility

Important Compatibility Information

My Book AV has been designed and tested to be used with specific devices. It may also work with additional devices not listed here.

DVRs (Set-Top-Boxes)*


Motorola DVRs

  • DCT6412
  • DCT6416
  • DCT3412
  • DCT3416
  • DCH3416
  • DCH6416
  • DCX3501
  • RNG200N


*Check with your cable service provider to confirm compatibility with their system.

*Receive free standard shipping (UPS Ground) on purchases over $100 (excluding tax and shipping charges) at the WD Store. Offer not valid for addresses in Hawaii or Alaska. The WD Store reserves the right to change or discontinue this offer at any time.