Live prices · Sorted by price per TB

Best 4TB External Hard Drive Deals Right Now

Compare 4TB External Hard Drives on Amazon US by price per TB. Choose new or used, then check the model, seller and price timestamp before buying.

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10 offers by price per TB

We found 24 recently priced 4TB External Hard Drives (new), showing the top 10 by price per TB. Prices start at $135.76, with the lowest price per TB currently at $33.94/TB.

# Product Capacity Condition Price / TB Price Region
1
ModusTech 4TB Desktop External Hard Drive (NOT-Portable) — Vault USB-C 3.1 (5Gbps) High-Speed HDD for PC, Mac, Laptop & Console, Mains-Powered Backup Storage, 2-Year Warranty
External 3.5"HDD
Listed warranty: 12 months · verify seller

4TB · New · Amazon US

Price checked Oct 27, 2026 12:23 UTC
4 TB New $33.94 /TB $135.76 us Amazon ↗
2
Seagate Portable 4TB External Hard Drive HDD – USB 3.0, 1-Year Rescue | Everyday HDD storage. Plug-and-play backup. Windows & macOS. Adobe CC trial included. 1-Year Warranty
Check form factorHDD
Listed warranty: 12 months · verify seller

4TB · New · Amazon US

Price checked Oct 27, 2026 13:33 UTC
4 TB New $47.50 /TB $189.99 us Amazon ↗
3
Seagate 4TB Expansion Portable Hard Drive | MicroB to USB-C (STNN4000400) | New Generation of Everyday HDD storage. Windows & macOS. Lightweight & travel-ready. 1-Year Warranty + 1-Year Rescue
Check form factorHDD

4TB · New · Amazon US

Price checked Oct 27, 2026 18:14 UTC
4 TB New $47.50 /TB $189.99 us Amazon ↗
4
Seagate Expansion Desktop, 4TB, External Hard Drive, USB 3.0 (STKP4000400)
Check form factorHDD

4TB · New · Amazon US

Price checked Oct 27, 2026 13:33 UTC
4 TB New $48.74 /TB $194.95 us Amazon ↗
5
WD 4TB My Passport, Portable External Hard Drive, Black, Backup Software with Defense Against ransomware, and Password Protection, USB 3.1/USB 3.0 Compatible - WDBPKJ0040BBK-WESN
Check form factorHDD
Listed warranty: 36 months · verify seller

4TB · New · Amazon US

Price checked Oct 27, 2026 13:32 UTC
4 TB New $48.75 /TB $194.99 us Amazon ↗
6
Toshiba 4TB Canvio Gaming Portable External Hard Drive USB 3.2 Gen 1 for PlayStation and Xbox - Black (HDTX240EK3CA)
Check form factorHDD

4TB · New · Amazon US

Price checked Oct 27, 2026 18:08 UTC
4 TB New $49.77 /TB $199.09 us Amazon ↗
7
LaCie Rugged USB-C, 4TB, Portable External Hard Drive, Drop, Shock, Dust, Rain Resistant, for Mac & PC (STFR4000800)
Check form factorHDD
Listed warranty: 24 months · verify seller

4TB · New · Amazon US

Price checked Oct 27, 2026 13:34 UTC
4 TB New $52.50 /TB $209.99 us Amazon ↗
8
BUSlink HB4TBHDD 4TB Hard Drive Expansion for HomeBase S380 (HomeBase 3) - Seamless Storage Upgrade for Security Video Recordings, Plug & Play Installation
External 3.5"HDD
Listed warranty: 12 months · verify seller

4TB · New · Amazon US

Price checked Oct 27, 2026 18:09 UTC
4 TB New $52.99 /TB $211.98 us Amazon ↗
9
Toshiba Canvio Basics 4TB Portable External Hard Drive USB 3.0, Black - HDTB540XK3CA
Check form factorHDD

4TB · New · Amazon US

Price checked Oct 27, 2026 13:34 UTC
4 TB New $53.44 /TB $213.75 us Amazon ↗
10
Toshiba Canvio Advance 4TB Portable External Hard Drive USB 3.0, Red - HDTCA40XR3CA
Check form factorHDD

4TB · New · Amazon US

Price checked Oct 27, 2026 13:34 UTC
4 TB New $53.87 /TB $215.47 us Amazon ↗
See all 24 listings

What to Check Before Buying a 4TB External Hard Drive

Power and portability

Check whether the drive needs a wall adapter or runs from USB. Compare physical size and power requirements for where you will use it.

Backup capacity

Allow room for version history and future growth. Keep an independent copy; one external drive holding your only copy is not a backup.

USB connection

Check the supported USB speed and included cable as well as the connector. USB-C describes the connector shape, not a guaranteed transfer rate.

Enclosure and warranty

Do not assume a particular internal drive model or recording technology unless the manufacturer documents it. Check warranty terms before removing an enclosure.

Frequently Asked Questions

Is a 4TB external HDD suitable for backups?
It can be, if its capacity fits your data, retained versions and expected growth. Plan an independent offsite copy as well, and test restoring files rather than only checking that backup software runs.
Can I remove the drive from a 4TB external enclosure?
Internal hardware can change between production runs, and some products use connections unsuitable for a standard drive bay. Verify the exact hardware and warranty implications; buying an external drive does not guarantee a specific NAS-compatible internal model.
Should I choose desktop or portable external storage?
Choose based on power access, carrying requirements and capacity. Compare actual offers rather than assuming one form factor is always cheaper per TB.

Sources and further reading

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