What are the alternatives to the Asustor Xpanstor 4 AS5004U, 4 Bay Expansion Unit USB 3.1 Gen 2 Type C NAS…?

Asustor Xpanstor 4 AS5004U, 4 Bay Expansion Unit USB 3.1 Gen 2 Type C NAS… competes with other External Storage products on SpecPicks. Use our Compare tool to view specs side-by-side, or browse the full External Storage category for alternatives.

Asustor

Asustor Xpanstor 4 AS5004U, 4 Bay Expansion Unit USB 3.1 Gen 2 Type C NAS Storage Capacity Expander

Name: Asustor Xpanstor 4 AS5004U, 4 Bay Expansion Unit USB 3.1 Gen 2 Type C NAS Storage Capacity Expander
Brand: Asustor
SKU: B0CCDPBYMN
Price: 319.99 USD
Availability: InStock

By Mike Perry, Hardware Editor · Verified 2026-09-06

Mike Perry has researched PC hardware since 2014, tracking 80+ GPU generations, 50+ retro handheld platforms, and 30+ vintage PC configurations. He synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides. View full credentials →

$319.99

As an Amazon Associate, SpecPicks earns from qualifying purchases.

View Current Price on Amazon → Compare to similar external storage

*Price sourced from Amazon.com. Price and availability subject to change.

Bottom line: The Asustor Xpanstor 4 AS5004U, 4 Bay Expansion Unit USB 3.1 Gen 2 Type C NAS Storage Capacity Expander is a niche pick — read recent reviews before buying in the external storage category, priced around $319.99. Compare close alternatives before committing.

SpecPicks Verdict

SpecPicks scored Asustor Xpanstor 4 AS5004U, 4 Bay Expansion Unit USB 3.1 Gen 2 Type… using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis across the external storage category. Asustor's external storage lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Mixed or limited buyer feedback at this price point — focus your evaluation on recent reviews that specifically address build quality and long-term reliability, and shortlist one or two close alternatives before deciding.

Common buyer scenarios for external storage of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.

Pros & Cons

Pros

✓ Plug and play
✓ Backed by Asustor's warranty and support channels
✓ Ships via Amazon with Prime eligibility and the standard returns policy

Cons

✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified

Key Features

Plug and play
10Gbps USB 3.2 Gen 2 using Type-C
Use up to 22TB per drive tray
Smart power sync helps save power
Smart fan circuit helps keep hard drives cool
Supports MyArchive cold backup technology

Full Specifications

Brand	Asustor
Color	Black
Model Name	Xpanstor 4
Read Speed	10 Gigabytes Per Second
Unit Count	1.0 Count
Form Factor	M2
Connectivity	USB
Model Number	AS5004U
Built-In Media	1 year technical support, Asustor 90-AS5004U00-M030
Hard Disk Size	22 TB
Hard-Drive Size	22 TB
Mfr Part Number	AS5004U
Number of Items	1
Special Feature	MyArchive cold backup technology
Installation Type	External Hard Drive
Compatible Devices	Server
Data Transfer Rate	10 Gigabits Per Second
Enclosure Material	Stainless Steel Alloy Steel Carbon Steel Aluminium
Additional Features	MyArchive cold backup technology
Hard Disk Interface	USB 3.0

Ready to buy?

Asustor Xpanstor 4 AS5004U, 4 Bay Expansion Unit USB 3.1 Gen 2 Type C NAS Storage Capacity Expander is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Current Price on Amazon →

*Price sourced from Amazon.com. Price and availability subject to change.