AS5004U specification sheet

In Stock Buy now!

Overview:

NAS Storage Capacity Expander

• 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

Features:

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 of 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. The included USB cable is not proprietary and replaceable, ensuring greater longevity and lower e-waste.

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.

Specifications:

©2026 Respective owners and brand holders. This table has been carefully researched and generated by ComXpert International CC (//www.comx-computers.co.za), however, errors and omissions may occur. Only references to South Africa apply. All products are sourced in South Africa from the official suppliers and the warranty is that of the local supplier. E&OE. This table and our site's content may be used on condition that this notice and link remains intact and unaltered.
Specifications
Product Code	AS5004U
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 Compatibility
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
Size and Weight	Size: 174(W)x170(H)x230(D) mm
	Weight: 2.03 kg / 4.48 lbs
File System	Internal Disk: EXT4, Btrfs
Storage Management	Support Multiple Volumes with Spare Drives
	Volume Type: Single, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10
	Support for Online RAID Level Migration
	Support for RAID Capacity Expansion
MyArchive	Hot swappable design enables easy transfer or exchange of high amounts of data
	Up to 4 bays reserved for MyArchive docking purposes
	File system support: EXT4, NTFS, HFS+, Btrfs and exFAT
	Supports AES 256-bit encryption on EXT4 and Btrfs
	Supports Btrfs snapshots
	Supports decryption with a USB ke