External hard drives remain the most cost-effective solution for bulk storage — $80–$100 buys 4–6TB of backup space, enough for thousands of videos, RAW photo archives, or complete system backups. In 2026 the choice is between portable bus-powered drives for travel and desktop drives with more capacity per dollar for home backups.
We evaluated storage capacity, transfer speed, reliability history, and value across these four picks from the two most trusted external storage brands.
What to Look For
- HDD vs SSD: External HDDs cost 5–10x less per terabyte than SSDs but are slower and more vulnerable to physical shock. SSDs are better for active use (editing, running apps). HDDs are better for backup and archiving — especially if the drive sits on a desk.
- Bus-powered vs. AC-powered: Portable drives under 2TB usually power from USB — no adapter needed. Desktop drives above 4TB typically need an AC adapter but offer lower cost per terabyte.
- Transfer speed: USB 3.0 HDD drives transfer at 100–130 MB/s in practice — fast enough for backup tasks. If you need faster transfer, look at USB-C SSD options.
- Encryption: Password-protected encryption (256-bit AES) keeps your data safe if the drive is lost or stolen. WD My Passport includes hardware encryption via WD Backup software.
- Reliability: Seagate and WD dominate the consumer external HDD market with decades of reliability data. Avoid generic brands for important data.
Our Top Picks
Seagate Expansion 4TB Portable Drive
Plug-and-play USB 3.0 portable drive with no software required. 4TB in a slim 3.5-inch form factor that works with Windows and Mac without formatting. Best all-around value for backup and extra storage without complexity.
WD My Passport 5TB Portable Drive
5TB of portable storage with 256-bit AES hardware encryption, USB-C connection, and WD Backup software included. Available in multiple colors. Drop-shock protection and a 3-year warranty make it the best carry-anywhere backup drive.
Seagate Backup Plus Slim 2TB
Ultra-thin 2TB portable drive that fits in a shirt pocket. USB 3.0, Mac and PC compatible, includes 2 months of Adobe Creative Cloud Photography. Best entry-level portable backup drive for lightweight travel use.
WD Elements Portable 2TB
No-frills 2TB USB 3.0 drive that works with Windows out of the box (reformatting needed for Mac). WD's proven reliability at the lowest price per terabyte in the portable category. Best option when you just need storage without extras.
Bottom line: Seagate Expansion 4TB is the best external hard drive for most people — maximum storage per dollar with zero setup. WD My Passport 5TB is worth the extra $20 if you travel with sensitive data and need hardware encryption. Budget storage: WD Elements 2TB at $55.