Asustor
The Asustor AS5402T (Nimbustor 2 Gen2) is a high‑performance two‑bay NAS featuring a quad‑core Intel Celeron processor, dual 2.5 GbE ports, and four PCIe Gen3 M.2 NVMe slots, aimed at content creators, power users and small offices. It offers fast 4K streaming, expandable storage up to 14 bays, and a rich app ecosystem via the ADM operating system.
Pros
Current
$406.99
Average
$371.32
Lowest
$369.00
Highest
$499.00
Lower = better sales rank
Asustor
Asustor
Asustor
UGREEN
AOOSTAR
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Cons
From Expert Reviews
Praised by Experts
From User Reviews
Users Love
Users Complain About
Best For
Content creators needing fast local access to large media files, home power users building a 4K media server, small offices requiring reliable file sharing and remote access, surveillance enthusiasts using multiple IP cameras, gamers and streamers who want direct HDMI playback, and DIY cloud users leveraging Nextcloud, Docker or WordPress on the NAS.
Not Ideal For
Users who expect an all‑in‑one package with pre‑installed drives, those requiring native RAID 5/6 on a two‑bay unit, or buyers who prioritize a metal chassis for a premium feel.
Expert Opinion
Professional reviewers consider the AS5402T a benchmark two‑bay NAS, awarding it PCMag’s Editors’ Choice for its blazing 2.5 GbE throughput, quad‑core CPU, and rare four‑slot M.2 configuration. Reviewers also commend the HDMI 2.0b output for direct 4K media playback and the device’s expandability, while noting the lack of native RAID 5/6 on the base model and the plastic chassis as minor drawbacks.
What Users Say
Everyday users overwhelmingly praise the NAS for its fast 4K streaming, rapid backup speeds, and the flexibility of four M.2 slots. The AiMaster mobile app and the quiet, tool‑free design receive frequent commendations. Common complaints revolve around the missing RAID 5 support, the need to manually set up SSD caching, and the perception of a less premium plastic exterior.
Common Complaints
Missing RAID 5/6 support on the base two‑bay configuration, reliance on included Cat 5e cables that limit 2.5 GbE performance, manual SSD‑cache setup, plastic enclosure perceived as less premium, and a learning curve for first‑time NAS users.
How It Compares
vs. Synology DS224+
Advantages
Disadvantages
Choose the DS224+ if you need built‑in RAID 5/6 and a metal enclosure; choose the AS5402T for superior speed, HDMI output, and expandability.
vs. TerraMaster F2-212
Advantages
Disadvantages
The F2‑212 is a budget option for basic file storage, but the AS5402T is the better choice for high‑performance media streaming and future‑proof expandability.
