6 Best Alternatives to the QNAP 4-Bay ARM Desktop NAS (2026)
As an Amazon Associate we earn from qualifying purchases. Links on this page are affiliate links.
The QNAP TS-433 4-Bay ARM NAS handles home file storage and media streaming with a quad-core ARM processor and 4 GB of DDR4 RAM. It includes a 2.5GbE port for faster local transfers and supports standard backup protocols. You might consider qnap 4 bay arm desktop NAS alternatives if you need different network speeds, a rackmount form factor, or integrated power backup. The products in this list were chosen because their specifications overlap with the original unit, offering similar capacity or connectivity options.
Some alternatives provide rackmount designs for server infrastructure, while others include UPS protection for uninterrupted operation. You may also prefer a different brand interface or additional surveillance licensing. Each option here matches the core requirement of four drive bays. This guide compares these models based on their published technical data to help you select the right hardware for your specific network environment and storage needs.
Our top pick: QNAP 4-Bay ARM Desktop NAS with 2.5GbE.
How each alternative compares
QNAP 4 Bay 1U Rackmount SATA JBOD
The QNAP TL-R400S is a 4-bay rackmount JBOD, not a standalone NAS. It lacks an internal processor and operating system, relying on a host server for control. This unit offers SATA connectivity for local storage expansion in existing server racks. You gain dedicated drive bays but lose the all-in-one convenience of the TS-433. It suits users with PCIe hardware who need extra capacity. The TS-433 provides its own ARM Cortex-A55 processor and network ports. Choose the TL-R400S only if you already have a compatible server infrastructure to manage the drives.
UGREEN DH4300 Plus 4-Bay NAS
The UGREEN DH4300 Plus Bundle is a 4-bay desktop NAS designed for home use. It emphasizes integrated UPS protection and easy photo management. This unit targets users building a private cloud without needing virtualization capabilities. It offers a practical entry-level solution similar to the TS-433 but with a focus on power backup and photo tools. The TS-433 includes a 2.5GbE port and hardware encryption. The UGREEN model may lack the specific networking speed or encryption features of the QNAP. Pick this alternative if UPS integration and simplified photo handling are your top priorities over raw network performance.
QNAP 4-Bay 2.5GbE Desktop NAS
The QNAP TS-433 4-Bay 2.5GbE Desktop NAS is essentially the same model as the original reference. It delivers essential 4-bay storage with 2.5GbE networking and hardware encryption. This unit fits home users who prioritize cost-effective file backup and media streaming over raw processing power. It shares the ARM Cortex-A55 quad-core processor and 4 GB DDR4 RAM of the TS-433. There is no significant functional difference between this listing and the primary product. You might choose this version based on current availability or specific bundle configurations. It remains a solid entry-level choice for capacity and basic network speeds.
UGREEN DH4300 Plus 4-Bay NAS with UPS
The UGREEN DH4300 Plus 4-Bay NAS with UPS includes included power backup and AI photo tools. It suits home users seeking simple private cloud storage without virtualization. This model adds UPS protection and advanced photo management features compared to the standard TS-433. The TS-433 focuses on hardware encryption and 2.5GbE networking. The UGREEN unit may offer better power safety and photo organization tools. However, it might lack the specific networking or encryption specs of the QNAP. Choose this alternative if AI photo tools and UPS inclusion are more important to you than hardware encryption or specific port configurations.
Synology CLP8 8-Camera License Pack
The Synology CLP8 is an 8-camera license pack, not a storage device. It provides eight additional surveillance channels for compatible Synology NAS and NVR systems. This product expands camera counts without buying new hardware. It is completely unrelated to the TS-433 NAS, which handles file storage and media streaming. The TS-433 has an ARM processor, 4 GB RAM, and 4 drive bays. The CLP8 is a software license with no physical drive capacity. You should only consider this if you already own a Synology NAS and need to add camera support. It is not a viable alternative for home file storage or media streaming needs.
Synology 4-Bay Rackmount Expansion Unit
The Synology RX418 is a 4-bay rackmount expansion unit, not a standalone NAS. It serves as a specialized storage add-on for existing Synology systems. It is not suitable for new users needing a complete NAS solution. The TS-433 is a self-contained unit with its own processor, RAM, and network ports. The RX418 relies on a host Synology NAS for operation. You gain more drive slots but lose the all-in-one convenience of the TS-433. Choose the RX418 only if you have an existing Synology system to connect to. It is ideal for expanding storage capacity within a compatible ecosystem rather than replacing a desktop NAS.
Quick picks
Our 7 picks
QNAP 4-Bay ARM Desktop NAS with 2.5GbE
Best for: home file storage and media streaming
- Drive Bays
- 4 Bay
- Network Connectivity
- 1 x 2.5GbE, 1 x 1GbE
- Processor
- ARM Cortex-A55
- RAM Capacity
- 4 GB DDR4
- Included Storage
- Diskless
- Processor Cores
- Quad-Core
View on Amazon: QNAP 4-Bay ARM Desktop NAS with 2.5GbE Affiliate link
The QNAP TS-433 is a 4-bay desktop NAS built for home users who need reliable file storage and media streaming. It uses an ARM Cortex-A55 quad-core processor running at 2.0GHz and includes 4 GB of DDR4 RAM. Network connectivity is handled by one 2.5GbE port and one 1GbE port. This setup supports easy backups for Windows and Mac computers, making it a practical choice for small family networks.
Pros
- ARM Cortex-A55 quad-core 2.0GHz processor
- 4 GB DDR4 RAM for multitasking
- 1 x 2.5GbE and 1 x 1GbE ports
- 4-bay capacity for ample storage expansion
Cons
- Lower network speed compared to 10GbE models on this list
- No mention of dual 2.5GbE ports found in competitors
- ARM architecture may lack some advanced enterprise features
Good fit if
- You need a budget-friendly 4-bay NAS for home use
- You want simple backups for Windows and Mac computers
- You prefer ARM-based stability for light multimedia streaming
Skip if
- You require 10GbE connectivity for high-speed transfers
- You need a desktop NAS with Intel or AMD processors
- You are looking for a 2-bay compact solution instead
Verdict: QNAP TS-433 4-Bay ARM NAS is a solid entry-level choice for home users who prioritize capacity and basic network speeds over high-end processing power.
QNAP 4 Bay 1U Rackmount SATA JBOD
Best for: Local storage expansion in server racks
- Drive Bays
- 4-Bay
- Included Storage
- Diskless
- Form Factor
- Rackmount
- Hardware Interface
- SATA
- Dimensions
- 21.3 × 16.3 × 7.05 inches
View on Amazon: QNAP 4 Bay 1U Rackmount SATA JBOD Affiliate link
The QNAP TL-R400S is a 1U rackmount SATA enclosure designed for storage expansion. It supports four 3.5-inch drives via SATA 6Gb/s interfaces. The unit includes a QXP-400eS-A1164 PCIe card and an SFF-8088 cable for connection. It works with QNAP NAS systems, Windows, and Linux computers. This JBOD unit offers physical expansion rather than network-attached storage capabilities.
Pros
- Supports four 3.5-inch SATA drives
- Includes QXP-400eS-A1164 PCIe card
- SATA 6Gb/s interface speed
- 1U rackmount form factor
Cons
- Diskless design requires separate drives
- Requires PCIe slot for connection
- Larger physical dimensions than desktop units
Good fit if
- You need local storage expansion for a server
- You have available PCIe slots in your chassis
- You prefer rackmount form factors for organization
Skip if
- You require a complete NAS with built-in operating system
- You need a compact desktop tower solution
- You lack internal expansion slots for the included card
Verdict: QNAP TL-R400S 4-Bay Rackmount JBOD serves as a dedicated storage expansion unit for users with existing server infrastructure. It fits buyers who need additional local drive capacity and have the necessary PCIe hardware to support the included controller card.
UGREEN DH4300 Plus 4-Bay NAS
Best for: Home users needing UPS protection
- Drive Bays
- 4-Bay
View on Amazon: UGREEN DH4300 Plus 4-Bay NAS Affiliate link
The UGREEN NAS DH4300 Plus is a 4-bay entry-level NAS designed for home users seeking private cloud storage. It includes a US3000 UPS with a 12000mAh battery for power protection. The system supports Docker containers and offers AI-driven photo management with semantic search. You can connect via NFC and access files across Windows, macOS, Android, and iOS. Disks are not included.
Pros
- Includes US3000 UPS with 12000mAh battery
- 4-bay capacity for large private storage
- Supports Docker containers
- AI photo recognition and semantic search
- NFC quick connection setup
Cons
- No virtual machine support
- Storage disks not included
- Entry-level performance for heavy workloads
Good fit if
- You want a UPS included for power safety
- You need simple AI photo organization
- You are moving from cloud storage
Skip if
- You require virtual machine support
- You need pre-installed hard drives
- You want advanced enterprise features
Verdict: UGREEN NAS DH4300 Plus Bundle offers a practical entry-level solution for home users who value integrated UPS protection and easy photo management. It suits those building a private cloud without needing virtualization capabilities.
QNAP 4-Bay 2.5GbE Desktop NAS
Best for: home file backup and media streaming
- Drive Bays
- 4-Bay
- Network Connectivity
- 1 x 2.5GbE, 1 x 1GbE
- Processor
- ARM Cortex-A55
- RAM Capacity
- 4 GB DDR4
View on Amazon: QNAP 4-Bay 2.5GbE Desktop NAS Affiliate link
The QNAP TS-433-4G-US is a budget-friendly 4-bay NAS built for home storage and media streaming. It uses an ARM Cortex-A55 quad-core processor running at 2.0GHz paired with 4 GB of DDR4 RAM. Networking includes one 2.5GbE port and one 1GbE port. It supports hardware-accelerated AES-NI 256 encryption. This unit suits users who need reliable file backup and centralized media management without high costs.
Pros
- ARM Cortex-A55 quad-core 2.0GHz processor
- 4 GB DDR4 RAM capacity
- 1 x 2.5GbE and 1 x 1GbE ports
- Hardware-accelerated AES-NI 256 encryption
- Compact and quiet design
Cons
- Only one 2.5GbE port limits multi-gigabit throughput
- ARM processor offers lower performance than x86 alternatives
- No mention of M.2 NVMe cache slots
Good fit if
- You need a budget-friendly home NAS for file storage
- You want hardware-accelerated encryption for data security
- You require 2.5GbE connectivity for faster transfers
Skip if
- You need high-performance virtualization or heavy container workloads
- You require dual 2.5GbE ports for link aggregation
- You prefer x86 architecture for broader software compatibility
Verdict: QNAP TS-433 4-Bay ARM NAS delivers essential 4-bay storage with 2.5GbE networking and hardware encryption. It fits home users who prioritize cost-effective file backup and media streaming over raw processing power.
UGREEN DH4300 Plus 4-Bay NAS with UPS
Best for: Home users needing AI photo tools and UPS
- Drive Bays
- 4-Bay
View on Amazon: UGREEN DH4300 Plus 4-Bay NAS with UPS Affiliate link
The UGREEN DH4300 Plus is an entry-level 4-bay NAS designed for home users moving from cloud storage. It supports Docker but does not support virtual machines. The system includes a 6000mAh UPS for power protection. You get AI album recognition and NFC connectivity for quick setup. It works with Windows, macOS, Android, and iOS. This bundle offers a one-time purchase solution for private cloud storage.
Pros
- 4-bay capacity for expanding storage
- Includes 6000mAh UPS for power backup
- Supports Docker containers
- AI photo recognition and classification
- NFC connectivity for easy setup
Cons
- No virtual machine support
- Entry-level performance for heavy workloads
- Storage disks not included in bundle
Good fit if
- You want to replace recurring cloud storage fees
- You need AI-powered photo organization
- You want a bundled UPS for reliability
Skip if
- You require virtual machine functionality
- You need high-end enterprise features
- You want pre-installed hard drives
Verdict: UGREEN DH4300 Plus 4-Bay NAS with UPS suits home users seeking simple private cloud storage with AI photo tools and included power backup. It is ideal for beginners who do not need virtualization.
Synology CLP8 8-Camera License Pack
Best for: expanding camera counts on Synology NAS
- Dimensions
- 5 × 5 × 1 inches
- Weight
- 0.71 ounces
View on Amazon: Synology CLP8 8-Camera License Pack Affiliate link
This is a software license pack for Synology NAS and NVR systems. It adds support for eight additional IP surveillance devices. You can migrate purchased licenses between units. It fits users who need more camera channels than their device provides by default. The package includes a single key for eight activations.
Pros
- Supports eight surveillance devices
- Migratable license key
- Compatible with Synology NAS and NVR
Cons
- Does not include physical cameras
- Requires existing Synology hardware
- Software only, no hardware included
Good fit if
- You need eight camera channels
- You use a Synology NAS
- You want migratable licenses
Skip if
- You need physical cameras
- You use non-Synology hardware
- You want hardware included
Verdict: Synology 8-Camera License Pack provides eight additional surveillance channels for compatible Synology NAS and NVR systems. It suits users who need to expand their camera count beyond default limits without buying new hardware.
Synology 4-Bay Rackmount Expansion Unit
Best for: expanding existing Synology NAS storage
- 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 features a compact 44 mm height and supports online volume expansion for seamless upgrades. The unit includes energy-saving deep sleep mode and is managed via Synology DiskStation Manager. It fits in 2-post racks and mounts to walls, making it a practical addition for users needing more drive slots without buying a new primary NAS.
Pros
- 4-bay diskless design for flexible storage expansion
- Supports online volume expansion for seamless upgrades
- Compact 44 mm height fits 2-post racks
- Includes energy-saving deep sleep mode
- Managed directly through Synology DiskStation Manager
Cons
- Diskless design requires separate purchase of hard drives
- Requires an existing Synology NAS to function
- Limited to Synology ecosystem compatibility
Good fit if
- You need to add more drive bays to an existing Synology NAS
- You want to expand storage capacity without replacing your current system
- You have space constraints requiring a low-profile 44 mm unit
Skip if
- You are looking for a standalone NAS with pre-installed drives
- You use a non-Synology NAS brand
- You need a device with built-in processing power
Verdict: Synology RX418 4-Bay Expansion Unit is a specialized storage add-on for Synology users. It suits those who need more drive slots and have an existing Synology system to connect to. It is not a standalone NAS for new users.
Specifications side by side
| Spec | QNAP 4-Bay ARM Desktop NAS with 2.5GbE | QNAP 4 Bay 1U Rackmount SATA JBOD | UGREEN DH4300 Plus 4-Bay NAS | QNAP 4-Bay 2.5GbE Desktop NAS | UGREEN DH4300 Plus 4-Bay NAS with UPS | Synology CLP8 8-Camera License Pack | Synology 4-Bay Rackmount Expansion Unit |
|---|---|---|---|---|---|---|---|
| Drive Bays | 4 Bay | 4-Bay | 4-Bay | 4-Bay | 4-Bay | not stated | 4-Bay |
| Network Connectivity | 1 x 2.5GbE, 1 x 1GbE | not stated | not stated | 1 x 2.5GbE, 1 x 1GbE | not stated | not stated | not stated |
| Processor | ARM Cortex-A55 | not stated | not stated | ARM Cortex-A55 | not stated | not stated | not stated |
| RAM Capacity | 4 GB DDR4 | not stated | not stated | 4 GB DDR4 | not stated | not stated | not stated |
| Included Storage | Diskless | Diskless | not stated | not stated | not stated | not stated | Diskless |
| Form Factor | not stated | Rackmount | not stated | not stated | not stated | not stated | not stated |
| Hardware Interface | not stated | SATA | not stated | not stated | not stated | not stated | not stated |
| Number of Bays | 4-Bay | 4-Bay | 4-Bay | 4-Bay | 4-Bay | not stated | 4-Bay |
| Processor Cores | Quad-Core | not stated | not stated | not stated | not stated | not stated | not stated |
| Dimensions | 8.68 × 6.31 × 6.5 inches | 21.3 × 16.3 × 7.05 inches | not stated | not stated | not stated | 5 × 5 × 1 inches | 17 × 11.4 × 1.73 inches |
| Weight | not stated | not stated | not stated | not stated | not stated | 0.71 ounces | 9.44 pounds |
| Size | 4 Bay | 4 Bay | not stated | 4 Bay | not stated | CLP8 | 44 mm x 480 mm x 325 mm |
| Color | White with dark gray/black front panel accent | black | black | not stated | not stated | Multicolor | black |
| Model | TS-433-US | TL-R400S | B0FPD93QC6 | not stated | DH4300 Plus | CLP8 | RX418 |
Frequently asked questions
Can I use a 4-bay NAS for home media streaming?
Yes, many 4-bay models are designed for home media streaming. The QNAP TS-433 and UGREEN DH4300 Plus Bundle support this use case out of the box. These units handle file storage and playback efficiently without requiring high-end processing power. You can store large video libraries locally and stream them to connected devices on your network.
What is the difference between a NAS and a JBOD?
A NAS includes its own processor and operating system, while a JBOD relies on a host server. The QNAP TL-R400S is a rackmount JBOD that lacks an internal OS. It serves as a dedicated storage expansion unit for existing server infrastructure. You need compatible PCIe hardware to support the included controller card for this type of device.
Do I need a UPS for a desktop NAS?
A UPS provides power backup to prevent data corruption during outages. The UGREEN DH4300 Plus Bundle includes integrated UPS protection for this purpose. This feature is practical for home users who want to safeguard their private cloud data. It allows the system to shut down safely if power is lost unexpectedly.
Can I expand an existing Synology NAS with a 4-bay unit?
Yes, Synology offers expansion units for this specific need. The Synology RX418 is a 4-bay expansion unit designed to add drive slots to an existing Synology system. It is not a standalone NAS for new users. You must connect it to your current Synology hardware to increase your total storage capacity.
Is hardware encryption available on entry-level NAS drives?
Some entry-level models include hardware encryption for data security. The QNAP TS-433 4-Bay ARM NAS features this capability alongside 2.5GbE networking. It fits users who prioritize cost-effective file backup and security over raw processing power. This ensures your stored files remain protected without needing software-based encryption solutions.
How do I add more camera licenses to my Synology system?
You can purchase additional license packs to expand your surveillance capabilities. The Synology CLP8 provides eight extra surveillance channels for compatible NAS and NVR systems. This allows you to increase your camera count beyond default limits without buying new hardware. It is a software-based solution for expanding your security setup.