NAS Storage Capacity Expander

ASUSTOR AS5004U Xpanstor 4 Bay USB-C Expansion Unit

A plug-and-play NAS storage capacity expander with four bays, USB 3.2 Gen 2 Type-C connectivity and MyArchive support.

4 BayStorage Expansion

USB-CType-C Interface

10 GbpsListed Transfer Speed

22TBListed Disk Support

Key Features

Plug and play online expansion
USB 3.2 Gen 2 Type C interface for 10 Gbps speed
Compatible with high capacity 22TB hard disks
Smart power sync helps to save power
Smart fan for temperature control
Supports MyArchive cold backup technology

Faster and Easier!

The all-new Xpanstor 4 adopts USB 3.2 Gen 2 with a Type-C socket. USB 3.2 Gen 2 transfers files even faster with the ability to transfer up to 10 Gbps. The Xpanstor is also backward compatible with ASUSTOR NAS devices that support USB 3.2 Gen 1 and will operate at the 5 Gbps maximum those devices support. Use the Xpanstor to expand the capacity of your NAS to grow your workflow as needed.

MyArchive Welcome!

The Xpanstor 4 supports MyArchive cold storage technology. Directly insert a MyArchive hard drive into an available bay to access data, making data access extremely convenient. Use MyArchive to also set up schedules for backing up with automatic mounting and unmounting, making your backups simpler and more convenient.

Sleeps When Your NAS Sleeps

When a connected NAS enters sleep mode or shuts down, the Xpanstor will enter sleep mode simultaneously to save energy and hardware longevity. LED brightness in the Xpanstor 4 also synchronizes with your NAS, ensuring no bright lights when your NAS is off.

Cool and Quiet

The internal fan found inside the Xpanstor 4 automatically adjusts its speed according to hard drive temperatures and maintains a balance between sound and performance.

Stable USB Connection

The Xpanstor 4 has a specially designed USB-C connector and cable. The cable included with your Xpanstor 4 locks in with your expansion unit with two screws on each side of the cable to lock it into the expansion unit to prevent it from being accidentally disconnected.

PC-Friendly!

The Xpanstor 4 works well as a DAS solution as well. Plug an Xpanstor into a computer to access up to four independent drives that can be used by a Windows, Mac or Linux machine for applications that include, but are not limited to, storage, drive cloning and diagnostics.

First-Class Product Warranty

All ASUSTOR NAS products come with a 3-year warranty. ASUSTOR continues to make customer service a priority in providing the highest standard of after-sales service and technical support.

Frequently Asked Questions

Product FAQs

Answers based on the product information supplied for this item.

What is the ASUSTOR AS5004U Xpanstor 4?

It is a four-bay storage capacity expansion unit with plug-and-play online expansion.

Which connection does the Xpanstor 4 use?

It uses a USB 3.2 Gen 2 Type-C interface with transfer capability of up to 10 Gbps.

Is the Xpanstor 4 backward compatible?

Yes. It is backward compatible with ASUSTOR NAS devices supporting USB 3.2 Gen 1 and operates at the 5 Gbps maximum supported by those devices.

Which hard drive capacity is listed as compatible?

The supplied feature list states compatibility with high-capacity 22TB hard disks.

Does the Xpanstor 4 support MyArchive?

Yes. It supports MyArchive cold storage technology, including scheduled backups with automatic mounting and unmounting.

Can the Xpanstor 4 be used with a computer?

Yes. It can be connected to a Windows, Mac or Linux computer as a DAS solution for up to four independent drives.

How does the Xpanstor 4 manage power and cooling?

It can enter sleep mode with a connected NAS, synchronise LED brightness, and automatically adjust fan speed according to hard drive temperatures.

What warranty is listed for the Xpanstor 4?

The supplied information states that ASUSTOR NAS products come with a 3-year warranty.

(AS5004U)

rdware Specifications

Flash Memory: 32MB Flash
Expansion: USB 3.2 Gen 2 (10Gbps) Type C
HDD: 4 x SATA3 6Gb/s; 3.5"/2.5" HDD/SSD
Maximum Internal Raw Capacity: 88 TB (22 TB HDD x 4, Capacity may vary by RAID types)
Supports Hot Swappable Drives
System Fan: 120mm x1
Power Supply Unit / Adapter: 90W x1
Input Power Voltage: 100V to 240V AC
Certification: FCC, CE, VCCI, BSMI, C-TICK, BIS, KCC, EAC
Applied Models: AS31, 32, 40, 61, 62, 63, 64, Nimbustor, Nimbustor Gen2, Drivestor, Drivestor Pro, Drivestor Lite, Drivestor Pro Gen2, Lockerstor, Lockerstor Gen2, Lockerstor Pro, Flashstor