UGREEN 4-Bay All-Flash SSD NAS Alternatives: 6 Similar Picks Compared

How each alternative compares

Synology 4-Bay Rackmount Expansion Unit

The Synology RX418 is a 4-bay rackmount expansion unit, not a standalone NAS. It lacks its own processor or network port, relying entirely on a host Synology NAS for operation. This makes it lighter at 9.44 pounds and smaller in height than the UGREEN model. You gain simple capacity scaling without managing a full server interface. It is ideal if you already own a Synology system and need more drive slots. You lose the standalone 10GbE speed and Intel i5 processing power found in the UGREEN DXP480T Plus. Pick this if your priority is expanding existing Synology storage rather than building a new all-flash server from scratch.

G-Technology 32TB G-Speed Shuttle

The G-Technology 32TB G-Speed Shuttle is a direct-attached storage device using Thunderbolt 3. It contains pre-installed drives, offering immediate 32TB capacity without buying separate SSDs. It is heavier at 16 pounds and designed for single-computer workflows. Unlike the UGREEN NAS, it has no built-in network port or Wi-Fi 6. You cannot access it over a local network without a computer acting as a host. It provides hardware RAID for large media files. Pick this if you edit 4K or 8K video directly on a workstation. You give up network accessibility and multi-user features for high-speed, portable local storage.

QNAP 4-Bay USB-C Hardware RAID Enclosure

The QNAP TR-004 is a 4-bay USB-C direct attached storage enclosure. It is diskless, requiring you to install your own drives. It is much lighter at 4.08 pounds and compact compared to the UGREEN model. It lacks a dedicated network port, processor, or operating system. You connect it via USB-C to a computer or NAS. This makes it a simple expansion unit rather than a full network server. You lose the 10GbE connectivity and Intel i5 performance. Pick this if you need to expand storage for a QNAP NAS or a PC without setting up a new network device. It is best for users who want simple, secure storage expansion.

QNAP 4-Bay USB-C Direct Attached Storage

The QNAP TR-004 with 12TB includes pre-installed drives, offering immediate storage capacity. It is a 4-bay USB-C direct attached storage device. It is lighter and smaller than the UGREEN NAS, weighing only 4.08 pounds. It lacks a network port, processor, or Wi-Fi capability. You connect it directly to a computer or NAS via USB. This setup is ideal for backing up existing NAS data or expanding PC storage. You give up the standalone network server features and 10GbE speeds of the UGREEN DXP480T Plus. Pick this if you want a hassle-free solution with pre-installed drives for local backup or expansion without managing a full NAS interface.

G-Technology 56TB G-Speed Shuttle Thunderbolt 3

The G-Technology 56TB G-Speed Shuttle offers significantly higher capacity than the UGREEN model's 32TB limit. It uses Thunderbolt 3 for direct connection to a single computer. It is heavier and designed for portable video editing workflows. It lacks any network connectivity, processor, or operating system. You cannot access it over a local network or share it with multiple users. It provides hardware RAID for large media files. Pick this if you are a mobile professional needing portable, high-capacity storage for 4K workflows. You give up the network accessibility and multi-user features of the UGREEN NAS for maximum local capacity and speed.

QNAP TR-004U 4 Bay Rackmount NAS

The QNAP TR-004U is a 4-bay rackmount expansion unit. It is designed to expand existing QNAP NAS storage capacity. It lacks its own processor or network port, relying on a host NAS. It is lighter at 4.41 pounds and has a rackmount form factor. This makes it suitable for server racks. You gain simple capacity scaling without managing a full server interface. You lose the standalone 10GbE speed and Intel i5 processing power. Pick this if you already have a QNAP NAS and need more drive slots in a rack setup. It is best for users who need to add rackable storage capacity to an existing infrastructure.

Quick picks

Our 7 picks

1 Best overall

UGREEN 4-Bay All-Flash SSD NAS Bundle

Best for: Creators needing fast all-flash SSD storage

Drive Bays

4-Bay

Network Connectivity

10GbE

Processor

12th Gen Intel Core i5

M.2 NVMe Slots

4 slots

Included Storage

Diskless

View on Amazon: UGREEN 4-Bay All-Flash SSD NAS Bundle Affiliate link

The UGREEN NASync DXP480T Plus is a diskless 4-bay NAS built for all-flash storage. It features four M.2 NVMe slots for SSDs, supporting up to 32TB of capacity. A 12th Gen Intel Core i5 processor handles heavy workloads, while a 10GbE port delivers high-speed wired transfers. Wi-Fi 6 provides wireless connectivity. This unit suits creators and editors needing fast, local storage for large media files.

Pros

• 12th Gen Intel Core i5 10-core processor
• Four M.2 NVMe slots for all-flash SSD storage
• 10GbE network port for high-speed data transfer
• Built-in Wi-Fi 6 connectivity
• Supports RAID 0, 1, 5, 6, and 10

Cons

• Sold diskless with no included storage drives
• No mention of USB ports for external backup
• No display for local status monitoring

Good fit if

• You need fast read/write speeds for video editing
• You want to use only SSDs for reliability
• You require 10GbE wired network connectivity

Skip if

• You need pre-installed storage drives
• You only need basic 1GbE network speeds
• You prefer a NAS with a built-in display

Verdict: UGREEN DXP480T Plus 4-Bay All-Flash NAS offers high performance for creators who need fast SSD storage and 10GbE speeds. It is ideal for users building a custom all-flash array.

2 Also great

Synology 4-Bay Rackmount Expansion Unit

Best for: expanding Synology NAS storage capacity

Drive Bays

4-Bay

Included Storage

Diskless

Dimensions

17 × 11.4 × 1.73 inches

Weight

9.44 pounds

View on Amazon: Synology 4-Bay Rackmount Expansion Unit Affiliate link

The Synology RX418 is a diskless 4-bay expansion unit designed to increase storage capacity for existing Synology NAS systems. It measures 17 by 11.4 by 1.73 inches and weighs 9.44 pounds. The device supports online volume expansion and deep sleep mode for energy efficiency. You can manage it through Synology DiskStation Manager. It fits standard 2-post racks.

Pros

• 4-bay capacity for drive expansion
• Plug-and-play online volume expansion
• Energy-saving deep sleep mode
• Fits 2-post and wall mount racks

Cons

• Diskless design requires separate drives
• Limited to Synology ecosystem compatibility
• No internal storage included

Good fit if

• You need to expand an existing Synology NAS
• You want to add more drive bays without buying a new system
• You use Synology DiskStation Manager for management

Skip if

• You need a standalone NAS with built-in storage
• You use a non-Synology NAS brand
• You require pre-installed drives

Verdict: Synology RX418 4-Bay Expansion Unit is a practical add-on for Synology users needing more storage space. It fits well if you already have a Synology NAS and want to scale up capacity easily.

3 Also great

G-Technology 32TB G-Speed Shuttle

Best for: Single-computer 4K/8K video editing

Drive Bays

4-Bay

Included Storage

32TB

RAID Support

0, 1, 5, 10

Hardware Interface

Thunderbolt

Dimensions

9.75 × 6.85 × 10.5 inches

Weight

16 pounds

View on Amazon: G-Technology 32TB G-Speed Shuttle Affiliate link

This is a transportable 4-bay storage drive with 32TB of capacity. It connects via Thunderbolt and supports hardware RAID 0, 1, 5, and 10. The unit weighs 16 pounds and measures 9.75 by 6.85 by 10.5 inches. It is built for multi-stream 4K and 8K workflows. You should use it if you need a durable, high-capacity drive for professional video editing or large file transfers.

Pros

• 32TB storage capacity
• Hardware RAID 0, 1, 5, 10 support
• Thunderbolt interface
• Transportable design
• Optimized for 4K and 8K workflows

Cons

• 16-pound weight makes it heavy to carry
• No USB-C or USB-A connectivity options
• No built-in network port for NAS sharing

Good fit if

• You need high-capacity storage for 4K or 8K video
• You require hardware RAID for data protection
• You work with large media files on a single computer

Skip if

• You need a network-attached storage device for multiple users
• You want a lightweight drive for frequent travel
• You need USB connectivity for older computers

Verdict: G-Technology 32TB G-Speed Shuttle Thunderbolt 3 is a heavy, high-capacity drive for single-computer video editing. It suits professionals who need hardware RAID and Thunderbolt speed for large media files.

4 Best budget

QNAP 4-Bay USB-C Hardware RAID Enclosure

Best for: Expanding QNAP NAS storage capacity

Drive Bays

4-Bay

Included Storage

Diskless

RAID Support

RAID 0, 1, 5, JBOD

Dimensions

8.62 × 6.31 × 6.63 inches

Weight

4.08 pounds

View on Amazon: QNAP 4-Bay USB-C Hardware RAID Enclosure Affiliate link

The QNAP TR-004 is a diskless direct-attached storage device designed to expand capacity or serve as a backup target for your existing QNAP NAS. It connects via USB Type-C and supports hardware RAID levels 0, 1, 5, and JBOD. This unit holds four 3.5-inch SATA drives. It is ideal for users who need simple, high-speed external storage without the complexity of a full NAS operating system.

Pros

• Hardware RAID support for RAID 0, 1, 5, and JBOD
• USB Type-C connection for fast data transfer
• Lockable drive bays for physical security
• Compatible with Windows, macOS, and Linux

Cons

• Cannot run NAS applications or act as a standalone NAS
• Limited to hardware RAID; no software RAID options
• Requires an existing QNAP NAS for full functionality

Good fit if

• You need to expand the storage capacity of your QNAP NAS
• You want a reliable backup target for your NAS data
• You prefer hardware RAID management over software solutions

Skip if

• You need a standalone NAS with its own operating system
• You want to install apps or services directly on the storage device
• You are using a non-QNAP NAS and need broader compatibility

Verdict: The QNAP TR-004 4-Bay USB-C DAS is a practical expansion unit for QNAP users. It fits those who need simple, secure storage expansion without managing a full NAS interface.

5 Also great

QNAP 4-Bay USB-C Direct Attached Storage

Best for: expanding PC storage or backing up NAS

Drive Bays

4-Bay

Included Storage

12TB

RAID Support

RAID 0, 1, 5, JBOD

View on Amazon: QNAP 4-Bay USB-C Direct Attached Storage Affiliate link

This is a QNAP TR-004 4-bay direct-attached storage unit with 12TB of capacity. It uses USB Type-C for Windows, macOS, and Linux. Four 4TB Seagate IronWolf drives come pre-installed in RAID 5. The unit supports RAID 0, 1, 5, and JBOD. It features lockable drive bays and includes a USB Type-C to Type-A cable. It serves as external storage or NAS backup.

Pros

• 12TB of pre-configured storage capacity
• USB Type-C connectivity for multiple operating systems
• Lockable drive bays for security
• Includes 3-year Rescue Data Recovery Services

Cons

• Lacks built-in network ports for standalone NAS use
• Uses older USB 3.2 Gen 1 speeds
• Requires a host computer for operation

Good fit if

• You need extra storage for a desktop PC
• You want to back up a QNAP NAS
• You prefer pre-configured RAID setups

Skip if

• You require a standalone network-attached storage device
• You need 10GbE or 2.5GbE network speeds
• You want to expand a NAS without a PC

Verdict: QNAP TR-004 4-Bay DAS with 12TB is a reliable external storage solution for users who need to expand capacity via USB or backup their existing NAS. It fits those who want pre-installed drives without setup hassle.

6 Best premium

G-Technology 56TB G-Speed Shuttle Thunderbolt 3

Best for: portable 4K video editing workflows

Drive Bays

4-Bay

Included Storage

56TB

Hardware Interface

Thunderbolt

Dimensions

9.75 × 6.85 × 10.5 inches

View on Amazon: G-Technology 56TB G-Speed Shuttle Thunderbolt 3 Affiliate link

The G-Technology G-Speed Shuttle is a transportable 4-bay Thunderbolt 3 storage unit. It offers 56TB of capacity for demanding production workflows. Sustained transfer rates reach up to 1000MB/s. The device supports multi-stream 4K and 8K editing. It includes an ev Bay Adapter for flexibility. This unit suits professionals needing high capacity in a portable form factor.

Pros

• 56TB total storage capacity
• Sustained transfer rates up to 1000MB/s
• Optimized for 4K and 8K workflows
• Includes ev Bay Adapter

Cons

• Thunderbolt 3 interface limits speed on older ports
• No internal RAID configuration options listed
• Larger dimensions than standard desktop drives

Good fit if

• You need high capacity for 4K video editing
• You require portable storage for field work
• You use Thunderbolt 3 compatible computers

Skip if

• You need Thunderbolt 4 native support
• You require internal RAID configuration
• You prefer a desktop form factor

Verdict: G-Technology 56TB G-Speed Shuttle delivers high capacity and speed for mobile professionals. It fits editors who need portable storage for 4K workflows.

7 Best rackmount

QNAP TR-004U 4 Bay Rackmount NAS

Best for: expanding QNAP NAS storage capacity

Drive Bays

4 Bay

Network Connectivity

USB 3.0 Type-C

Form Factor

Rackmount

Dimensions

21.3 × 16.5 × 7.87 inches

Weight

4.41 pounds

View on Amazon: QNAP TR-004U 4 Bay Rackmount NAS Affiliate link

The QNAP TR-004U is a 4-bay rackmount expansion unit designed for NAS environments. It connects via USB 3.0 Type-C and supports SATA drives. You can use it to add storage space to a QNAP NAS or as hardware-based RAID storage. The unit features lockable drive trays and dip switches for RAID configuration. It measures 16.5 inches wide and weighs 4.41 pounds. This makes it suitable for users needing expandable, rackable storage.

Pros

• 4-bay capacity for SATA drives
• USB 3.0 Type-C connectivity
• Rackmount form factor
• Lockable hard drive trays
• Dip switch for RAID configuration

Cons

• Requires a QNAP NAS for full software management
• Limited to USB 3.0 speeds
• No internal drive storage included

Good fit if

• You need to expand a QNAP NAS with more drive bays
• You require a rackmount storage solution
• You want lockable drive trays for security

Skip if

• You need a standalone direct-attached storage device without a NAS
• You prefer Thunderbolt 3 connectivity for faster speeds
• You want a pre-configured unit with drives included

Verdict: The QNAP TR-004U 4-Bay Rackmount Expansion is a practical choice for QNAP users who need to add rackable storage capacity. It fits best in setups where you already have a QNAP NAS and need more drive slots.

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