Updated 4 Sep 2015

WD

My Book WDBFJK 0040HBK

Snapshot: The WD My Book WDBFJK0040HBK is a 4TB external hard drive without a Thunderbolt port. How fast does it work?

My Book WDBFJK 0040HBK
Consumer score
SCORE
Avg price

$275

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Test results

Overall score
78
Performance
?/10
Ease of use
?/10
Software versatility
?/10

Good points

  • Good performance.
  • Good average write speed.
  • Fast average read speed.
  • Easy to use.
  • Very good software versatility – managing backups, file protection and power management.
  • Has hardware encryption.

But

No obvious bad points.

How we test

Overall score includes:

Performance (50%): tests the time and speeds of writing data to the hard driving and reading data from the hard drive. We test using USB 3.0 and 5GB files on a Windows 7 PC. We also test any Thunderbolt connections the same way but using an Apple iMac. The test computers are re-imaged before testing the next hard drive.
Ease of use (25%): assesses the setup time and ease as well as the ease of performing common tasks. It also includes the ease of restoring a particular version of a backed up file.
Software versatility (25%): is made up of a 50% assessment of backup, 40% of security and 10% of support. A software versatility score of 0 means there is no software.

Key data

Model

Avg price
$275
Type
Desktop external hard drive

Specifications

Stated capacity (GB)
4000
Formatted capacity (GB)
-
Default file format

NTFS

Weight (kg)
1.1
D x W x H (mm)
139 x 50 x 171
Write rate (MB/sec)
832
Read rate (MB/sec)
789
Write time (seconds)
77
Read time (seconds)
59
Wireless protocols (802.11)
n/a
Wireless bands (GHz)
n/a
Claimed number of concurrent wireless connections
n/a
Battery life (hh:mm)
n/a

Features

Thunderbolt port
No
Encryption type
Hardware
Supplied backup software
Yes
Online storage

Dropbox is supported and comes with 2GB of free online storage

Kensington lock
Yes
Ethernet port
-
Internet sharing for Wi-Fi (GB)
-
Internet sharing for 3G/4G
-
Android AVI
-
iOS AVI
-
Android MKV
-
iOS MKV
-
Android MOV
-
iOS MOV
-
Android MP4
-
iOS MP4
-
Android WMV
-
iOS WMV
-