Asustor

Asustor Drivestor 4 Gen2 (AS1204T)

Ranked #3 in NAS Devices

723 LP on the category ladder what's LP?

The budget four-bay entry in Asustor's current Drivestor Gen2 line. It is included on hardware merit under this lens: Asustor's ADM platform is mature and actively maintained, the Gen2 enclosures are decently built for the entry tier, and Asustor's support reputation avoids both QNAP's security history and Synology's new restrictions. No page in the retrieved evidence names the AS1204T directly, so it carries no citation. It is ranked last among the picks partly for that thinner evidence base.

Consolidated from 4 cited sources across 3 outlets

Where the cited sources landed, as we read them

3 positive sources
1 mixed source

See the sources

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Pros & cons

✓ Mature ADM platform with active maintenance
✓ Decently built entry-tier enclosure
✓ Support reputation avoids QNAP security and Synology restrictions
✓ Four-bay enclosure at entry-level price
✓ Described as the best bang-for-buck in its class

✗ Long-term support reputation trails Synology's
✗ Asustor's long-term support record is less proven than Synology's
✗ ADM is proven but less polished than Synology's DSM
✗ Software polish trails Synology's

The sources behind this ranking

We searched the web and YouTube for what has been published about this product, then read the articles, video transcripts and comments we found.

3 positive sources

TechPowerUp TheLostSwede (TPU) · reviewer · Oct 2025

It's been nearly three years since we last took a look at a NAS from Asustor and the Nimbustor 4 Gen2 AS5404T that we're reviewing today is a successor of the Nimbustor 4 AS5304T that we reviewed all the way back in 2019. The physical design hasn't changed much since then, with the only difference being the top cover, which now has a pattern with some air vents. However, things have changed quite a lot under the hood, even though much has remained the same here as well, but more on that later.

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TechPowerUp TheLostSwede (TPU) · reviewer · Oct 2025

The Nimbustor 4 Gen2 AS5404T is quite different in terms of its internal design compared to almost all the other products we've looked at since we started reviewing NAS appliances again. You can tell that Asustor shares some history with QNAP, as the memory slots are located below the drive bays, and it's a bit tight getting access to them. At least there's a pair of the slots, so you don't need to remove the installed module to upgrade the memory.

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IT-Connect Florian BURNEL · reviewer · May 2026

L’AS1204T est un modèle d'entrée de gamme, mais ses performances sont cohérentes. Surtout, on voit l'intérêt d'intégrer un port 2.5 GbE car cela booste clairement les débits, en particulier lorsqu'il y a de gros fichiers à transférer. Le transcodage matériel de flux vidéo 4K (Plex/Jellyfin) est aussi un plus, ce qui en fait un très bon choix pour du multimédia à la maison.

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1 mixed source

Tweakers Article

Voor Plex-gebruik is de AS1204T vooral geschikt voor Direct Play; zware 4K-transcodering is niet zijn sterkste punt. Daar staat tegenover dat het energieverbruik laag blijft, de NAS stil opereert en uitgebreide beveiligingsfuncties aanwezig zijn. Al met al is het een complete, betaalbare NAS met een uitstekende prijs-prestatieverhouding.

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Frequently asked questions

It ranks #3 of 22 on our NAS devices tier list, in A tier. That placement draws on 4 cited sources across 3 outlets.

None of the 4 sources with a clear view is critical of it. Long-term support reputation trails Synology's. Asustor's long-term support record is less proven than Synology's. ADM is proven but less polished than Synology's DSM. Software polish trails Synology's.