Seagate Backup Plus Slim 4TB Portable External Hard Drive: 3 of 8 decision facts sourced. Missing: Sequential read, Sequential write, Endurance (TBW), DRAM cache, Warranty.
WD My Passport 4TB Portable External Hard Drive: 3 of 8 decision facts sourced. Missing: Sequential read, Sequential write, Endurance (TBW), DRAM cache, Warranty.
| Seagate Backup Plus Slim 4TB Portable External Hard Drive | WD My Passport 4TB Portable External Hard Drive | |
|---|---|---|
| Price today | $149.99 | Price not yet checked |
| Capacity | 5TB seagate.com | 4TB newegg.com |
| Interface | USB 2.0 bestbuy.com | USB 3.0 bestbuy.com |
| Starting MSRP | $109.99 bestbuy.com | $119.99 bestbuy.com |
Not yet sourced — Seagate Backup Plus Slim 4TB Portable External Hard Drive: Sequential read, Sequential write, Endurance (TBW), DRAM cache, Warranty. WD My Passport 4TB Portable External Hard Drive: Sequential read, Sequential write, Endurance (TBW), DRAM cache, Warranty. No manufacturer, official or retailer source we read publishes these yet; we don't estimate them.
Verdict: Pick Seagate Backup Plus Slim if you need more storage (5TB) and a lower price ($109.99) despite the slower USB 2.0. Pick WD My Passport if faster USB 3.0 transfer and built‑in AES encryption are priorities, even though it costs $119.99 and holds 4TB. Neither publishes sequential read, sequential write, endurance, DRAM cache or warranty yet.
Provisional pick: Seagate Backup Plus Slim — not enough sourced decision facts for Seagate Backup Plus Slim 4TB Portable External Hard Drive and WD My Passport 4TB Portable External Hard Drive. We don't rank on specs we can't verify.
| Seagate Backup Plus Slim 4TB Portable External Hard Drive | WD My Passport 4TB Portable External Hard Drive | |
|---|---|---|
| Capacity | 5TB | 4TB |
| Interface | USB 2.0 | USB 3.0 |
| Starting MSRP | $109.99 | $119.99 |
| External Hard Drive Type | Portable | Portable |
| Included Software | Seagate backup software, NTFS driver for PC, 2-month complimentary membership to Adobe Creative Cloud Photography Plan | WD Security, WD Drive Utilities, WD Backup |
| Internal Or External | External | External |
Provisional pick: Seagate Backup Plus Slim — not enough sourced decision facts for Seagate Backup Plus Slim 4TB Portable External Hard Drive and WD My Passport 4TB Portable External Hard Drive.
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