An external hard drive suitable for backups or for moving large files from one computer to another. Available in several sizes with different storage capacity, USB, Firewire and network access. Prices from 98 stores in this category.
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Product Lowest price User rating Rank Hard drive size Price/GB Form factor

LaCie 4Big Quadra USB 3.0/FW800 12TB

External hard disk drive

$1,463.50

  247
 12,000  GB 0.00  $/GB3.5 inches 

WD My Book Duo Thunderbolt V2 8TB

External hard disk drive

$1,062.30

  221
 8,000  GB 0.00  $/GB3.5 inches 

Seagate Expansion Desktop Drive V2 USB 3.0 4TB

External hard disk drive

* $255.00

4
 8/10
2 user reviews
56
 4,000  GB 0.06  $/GB3.5 inches 

WD My Book Duo 4TB

External hard disk drive

$469.00

19
 53
 4,000  GB 0.12  $/GB3.5 inches 

WD My Book Duo 6TB

External hard disk drive

$518.15

16
 82
 6,000  GB 0.09  $/GB3.5 inches 

LaCie 2Big Quadra V3 6TB

External hard disk drive

$633.87

11
 198
 6,000  GB 0.11  $/GB3.5 inches 

LaCie 2Big Quadra V3 4TB

External hard disk drive

$665.17

3
  203
 4,000  GB 0.17  $/GB3.5 inches 

WD My Book Duo 8TB

External hard disk drive

$733.70

22
 65
 8,000  GB 0.09  $/GB3.5 inches 

WD My Book Duo Thunderbolt V2 4TB

External hard disk drive

* $736.56

2
  220
 4,000  GB 0.18  $/GB3.5 inches 

WD My Book Duo 12TB

External hard disk drive

$1,049.00

12
 106
 12,000  GB 0.09  $/GB3.5 inches 

LaCie 4Big Quadra USB 3.0/FW800 8TB

External hard disk drive

$1,410.06

1
  362
 8,000  GB 0.18  $/GB 

LaCie 5big Thunderbolt 10TB

External hard disk drive

$1,710.63

1
  346
 10,000  GB 0.17  $/GB3.5 inches 

LaCie 4Big Quadra USB 3.0/FW800 16TB

External hard disk drive

$2,180.08

6
  207
 16,000  GB 0.14  $/GB3.5 inches 

LaCie 5big Thunderbolt 20TB

External hard disk drive

$3,260.51

1
  347
 20,000  GB 0.16  $/GB3.5 inches 

Transcend StoreJet 25D3 TS500GSJ25D3 500GB

External hard disk drive

$95.50

  243
 500  GB 0.00  $/GB2.5 inches 

Seagate Backup Plus Desktop V2 for Mac USB 3.0 4TB

External hard disk drive

$327.70

  196
 4,000  GB 0.00  $/GB3.5 inches 

Transcend StoreJet 35 Turbo TS2TSJ35T3 2TB

External hard disk drive

$182.50

  239
 2,000  GB 0.00  $/GB3.5 inches 

Promise Pegasus2 R6 24TB

External hard disk drive

$6,198.50

  378
 24,000  GB 0.00  $/GB 

Promise Pegasus2 R8 48TB

External hard disk drive

$9,775.00

  379
 

Promise Pegasus2 R4 12TB

External hard disk drive

$3,149.00

  380
 12,000  GB 0.00  $/GB 

Toshiba Canvio Connect 1.5TB

External hard disk drive

$135.30

  231
 1,500  GB 0.00  $/GB2.5 inches 

HGST Touro Mobile USB 3.0 500GB

External hard disk drive

$65.55

10
 19
 500  GB 0.13  $/GB2.5 inches 

Adata DashDrive HV620 500GB

External hard disk drive

$79.00

29
8/10
1 user review
45
 500  GB 0.16  $/GB2.5 inches 

HGST Touro Mobile Pro 500GB

External hard disk drive

$79.35

4
  195
 500  GB 0.16  $/GB2.5 inches 

HGST Touro Mobile MX3 500GB

External hard disk drive

$79.35

3
 176
 500  GB 0.16  $/GB2.5 inches 

Transcend StoreJet 25H3 TS500GSJ25H3P 500GB

External hard disk drive

$80.50

38
 103
 500  GB 0.16  $/GB2.5 inches 

Transcend StoreJet 25M2 TS500GSJ25M2 500GB

External hard disk drive

$83.00

2
  252
 500  GB 0.17  $/GB2.5 inches 

Verbatim Store 'n' Go Portable USB 3.0 1TB

External hard disk drive

$84.15

25
5/10
2 user reviews
66
 1,000  GB 0.08  $/GB2.5 inches 

Transcend StoreJet 25M3 TS500GSJ25M3 500GB

External hard disk drive

$84.25

27
 126
 500  GB 0.17  $/GB2.5 inches 

Adata DashDrive Durable HD710 USB 3.0 500GB

External hard disk drive

$88.00

31
 59
 500  GB 0.18  $/GB3.5 inches 

Transcend StoreJet A3 TS500GSJ25A3K 500GB

External hard disk drive

$88.25

15
 193
 500  GB 0.18  $/GB2.5 inches 

Seagate Expansion Portable Drive USB 3.0 500GB

External hard disk drive

$89.00

3
 163
 500  GB 0.18  $/GB2.5 inches 

Seagate Expansion Portable Drive V2 USB 3.0 500GB

External hard disk drive

$89.00

1
6/10
1 user review
128
 500  GB 0.18  $/GB2.5 inches 

WD Elements Portable SE 3.0 500GB

External hard disk drive

$89.00

3
 105
 500  GB 0.18  $/GB2.5 inches 

Seagate Expansion Portable Drive V2 USB 3.0 1TB

External hard disk drive

$89.00

12
8/10
2 user reviews
3
 1,000  GB 0.09  $/GB2.5 inches 

Seagate Expansion Portable Drive 1TB

External hard disk drive

$89.00

26
6/10
1 user review
4
 1,000  GB 0.09  $/GB2.5 inches 

Toshiba Canvio Connect 750GB

External hard disk drive

$89.99

6
 177
 750  GB 0.12  $/GB2.5 inches 

Verbatim 2.5" Mobile Hard Drive USB 2.0 500GB

External hard disk drive

$91.09

16
 85
 500  GB 0.18  $/GB2.5 inches 

Verbatim 2.5" Mobile Hard Drive USB 2.0 320GB

External hard disk drive

$91.83

1
  373
 320  GB 0.29  $/GB2.5 inches 

WD Elements Portable USB 3.0 750GB

External hard disk drive

$95.00

2
 169
 750  GB 0.13  $/GB2.5 inches 

Silicon Power Armor A80 1TB

External hard disk drive

$95.95

1
  224
 1,000  GB 0.10  $/GB2.5 inches 

LaCie Hard Drive Porsche P9220 USB 3.0 500GB

External hard disk drive

$97.68

16
 144
 500  GB 0.20  $/GB2.5 inches 

Adata DashDrive HV620 1TB

External hard disk drive

$97.75

32
 51
 1,000  GB 0.10  $/GB2.5 inches 

Transcend StoreJet 25A3 TS1TSJ25A3 1TB

External hard disk drive

$97.88

13
 140
 1,000  GB 0.10  $/GB2.5 inches 

Toshiba Canvio Basics 2.5" USB 3.0 1TB

External hard disk drive

$98.00

20
 18
 1,000  GB 0.10  $/GB2.5 inches 

WD Elements Portable USB 3.0 1TB

External hard disk drive

$98.00

30
5/10
5 user reviews
9
 1,024  GB 0.10  $/GB2.5 inches 

Verbatim Store 'n' Go Portable USB 3.0 500GB

External hard disk drive

$98.15

15
7/10
4 user reviews
212
 500  GB 0.20  $/GB2.5 inches 

HGST Touro Mobile MX3 1TB

External hard disk drive

$98.67

4
 6/10
1 user review
107
 1,000  GB 0.10  $/GB2.5 inches 

Freecom ToughDrive Pro USB 2.0 320GB

External hard disk drive

$99.00

1
  309
 320  GB 0.31  $/GB2.5 inches 

WD My Passport Ultra USB 3.0 1TB

External hard disk drive

$99.00

10
8/10
7 user reviews
8
 1,000  GB 0.10  $/GB2.5 inches 

Toshiba StorE Plus 2.5" USB 3.0 750GB

External hard disk drive

$99.00

1
 171
 750  GB 0.13  $/GB2.5 inches 

Silicon Power Armor A60 1TB

External hard disk drive

$99.00

11
 42
 1,000  GB 0.10  $/GB2.5 inches 

Seagate Backup Plus Slim Portable V2 USB 3.0 1TB

External hard disk drive

$99.00

30
6/10
1 user review
5
 1,000  GB 0.10  $/GB2.5 inches 

Silicon Power Diamond D03 500GB

External hard disk drive

$99.95

1
  225
 500  GB 0.20  $/GB2.5 inches 

WD Elements Portable 2.0 500GB

External hard disk drive

$99.99

1
 6/10
1 user review
310
 500  GB 0.20  $/GB2.5 inches 

Transcend StoreJet 25M3 TS1TSJ25M3 1TB

External hard disk drive

$100.42

29
8/10
1 user review
20
 931  GB 0.11  $/GB2.5 inches 

Adata DashDrive Classic CH11 USB 3.0 500GB

External hard disk drive

$100.60

5
 249
 500  GB 0.20  $/GB2.5 inches 

Transcend StoreJet 25H3 TS1TSJ25H3P 1TB

External hard disk drive

$102.00

37
8/10
1 user review
36
 1,000  GB 0.10  $/GB2.5 inches 

Seagate Expansion Portable Drive USB 2.0 500GB

External hard disk drive

$103.50

2
 8/10
14 user reviews
268
 500  GB 0.21  $/GB2.5 inches 

Transcend StoreJet 25D3 TS1TSJ25D3 1TB

External hard disk drive

$105.00

13
3/10
1 user review
21
 1,000  GB 0.11  $/GB2.5 inches 

LaCie Hard Drive Porsche P9223 Slim USB 3.0 500GB

External hard disk drive

$106.00

16
 145
 500  GB 0.21  $/GB2.5 inches 

Adata DashDrive Durable HD710 USB 3.0 1TB

External hard disk drive

$106.04

40
 6
 1,000  GB 0.11  $/GB2.5 inches 

WD My Passport for Mac USB 3.0 V2 500GB

External hard disk drive

$106.19

15
 72
 500  GB 0.21  $/GB2.5 inches 

Toshiba StorE Canvio V2 2.5" USB 3.0 750GB

External hard disk drive

$106.79

3
 184
 750  GB 0.14  $/GB2.5 inches 

Toshiba Canvio Basics 2.5" USB 3.0 500GB

External hard disk drive

$107.95

9
  54
 500  GB 0.22  $/GB2.5 inches 

WD Elements Portable SE 3.0 1TB

External hard disk drive

$108.95

7
6/10
11 user reviews
86
 1,000  GB 0.11  $/GB2.5 inches 

Seagate Backup Plus Desktop V2 USB 3.0 2TB

External hard disk drive

$109.00

33
 27
 2,000  GB 0.05  $/GB3.5 inches 

Seagate Backup Plus Portable USB 3.0 1TB

External hard disk drive

$109.00

2
8/10
3 user reviews
206
 1,000  GB 0.11  $/GB2.5 inches 

WD My Passport for Mac USB 3.0 500GB

External hard disk drive

$109.00

3
 340
 500  GB 0.22  $/GB2.5 inches 

Toshiba Canvio Connect II 1TB

External hard disk drive

$109.00

9
 95
 1,000  GB 0.11  $/GB2.5 inches 

Adata DashDrive Classic CH11 USB 3.0 750GB

External hard disk drive

$109.19

1
  265
 750  GB 0.15  $/GB2.5 inches 

Adata DashDrive HV620 750GB

External hard disk drive

$109.25

1
  141
 750  GB 0.15  $/GB2.5 inches 

Silicon Power Diamond D06 1TB

External hard disk drive

$109.71

1
 135
 1,000  GB 0.11  $/GB2.5 inches 

Transcend StoreJet 25M2 TS1TSJ25M2 1TB

External hard disk drive

$110.00

2
  250
 1,000  GB 0.11  $/GB2.5 inches 

WD Elements Portable SE 1TB

External hard disk drive

$110.40

2
 8/10
1 user review
260
 1,000  GB 0.11  $/GB2.5 inches 

Seagate Backup Plus Slim for Mac USB 3.0 1TB

External hard disk drive

$112.70

11
 43
 1,000  GB 0.11  $/GB2.5 inches 

Seagate FreeAgent GoFlex USB 3.0 500GB

External hard disk drive

$113.39

1
  337
 500  GB 0.23  $/GB2.5 inches 

Seagate FreeAgent GoFlex USB 2.0 1TB

External hard disk drive

$113.85

1
  319
 1,000  GB 0.11  $/GB2.5 inches 

Toshiba Canvio Connect 1TB

External hard disk drive

$115.95

10
  173
 1,000  GB 0.12  $/GB2.5 inches 

WD My Passport Ultra II USB 3.0 1TB

External hard disk drive

$117.96

18
 28
 1,000  GB 0.12  $/GB2.5 inches 

WD My Passport USB 3.0 750GB

External hard disk drive

$119.00

2
 244
 750  GB 0.16  $/GB2.5 inches 

WD My Passport Ultra Metal Edition USB 3.0 1TB

External hard disk drive

* $119.00

8
 46
 1,000  GB 0.12  $/GB2.5 inches 

Silicon Power Armor A85 1TB

External hard disk drive

$119.95

1
  364
 1,000  GB 0.12  $/GB 

Seagate Expansion Desktop Drive V2 USB 3.0 1TB

External hard disk drive

$120.75

1
  147
 1,000  GB 0.12  $/GB3.5 inches 

Verbatim 2.5" Mobile Hard Drive USB 2.0 1TB

External hard disk drive

$120.82

13
 148
 1,000  GB 0.12  $/GB2.5 inches 

HP px3100 External Portable USB 3.0 HDD 1TB

External hard disk drive

$121.95

8
  131
 1,000  GB 0.12  $/GB2.5 inches 

LaCie Hard Drive Porsche P9220 USB 3.0 1TB

External hard disk drive

$122.61

16
8/10
2 user reviews
99
 1,000  GB 0.12  $/GB2.5 inches 

Toshiba StorE Slim V2 2.5" USB 3.0 1TB

External hard disk drive

$122.95

5
 8/10
1 user review
132
 1,000  GB 0.12  $/GB2.5 inches 

Adata DashDrive Classic CH11 USB 3.0 1TB

External hard disk drive

$126.50

6
  237
 1,000  GB 0.13  $/GB2.5 inches 

Seagate Expansion Portable Drive 2TB

External hard disk drive

$129.00

30
6/10
1 user review
1
 2,000  GB 0.06  $/GB2.5 inches 

HGST Touro Mobile USB 3.0 1TB

External hard disk drive

* $129.00

1
  49
 1,000  GB 0.13  $/GB2.5 inches 

Toshiba Canvio Slim II USB 3.0 1TB

External hard disk drive

$129.08

3
 199
 1,000  GB 0.13  $/GB2.5 inches 

LaCie Rugged Mini USB 3.0 7200rpm 500GB

External hard disk drive

$129.89

15
 92
 500  GB 0.26  $/GB2.5 inches 

Dell Portable HDD USB 3.0 400-27148 1TB

External hard disk drive

$131.11

5
  339
 1,000  GB 0.13  $/GB 

Adata DashDrive HE720 USB 3.0 500GB

External hard disk drive

* $134.99

5
 228
 500  GB 0.27  $/GB2.5 inches 

Silicon Power Diamond D03 1TB

External hard disk drive

$135.00

2
 7/10
1 user review
230
 1,000  GB 0.14  $/GB2.5 inches 

Imation Apollo Gen II 500GB

External hard disk drive

$135.13

1
  327
 500  GB 0.27  $/GB2.5 inches 

Seagate Wireless Mobile Storage 500GB

External hard disk drive

$135.36

22
 23
 500  GB 0.27  $/GB2.5 inches 

Adata DashDrive Elite Nobility NH13 USB 3.0 1TB

External hard disk drive

* $137.24

2
  218
 1,000  GB 0.14  $/GB2.5 inches 

Verbatim Store 'n' Go Portable USB 3.0 v2 1TB

External hard disk drive

$137.99

4
  372
 1,000  GB 0.14  $/GB2.5 inches 
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