Synology DS223j is the top pick among NAS under $400, rated 4.6 stars across 862 customer reviews.
SynologyDS223j
4.6(862)10% OFF$209.99$189.99
UGREENNASync DXP2800
4.5(918)13% OFF$439.99$382.98
SynologyDS223
4.6(579)16% OFF$304.99$254.99
UGREENNASync DH2300
4.5(695)15% OFF$269.99$229.99
SynologyDS225+
4.6(228)15% OFF$364.99$309.99
UGREENNASync DH4300 Plus
4.1(316)15% OFF$439.99$373.98
SynologyDS124
4.3(212)$159.99
SynologyDS423
4.4(165)$399.99- Price alerts
NAS under $400, updated as prices fall
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UbiquitiUNAS 2
1.0(1)8% OFF$269.99$248.20
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Frequently asked questions
What are the best NAS under $400?
Synology DS223j, UGREEN NASync DXP2800 and Synology DS223 lead our ranking of NAS under $400, ordered by customer rating weighted by how many reviews back it. The full list compares 9 products in this price range.
How many NAS cost less than $400?
This page tracks 9 NAS under $400 from 3 brands, with prices starting at $159.99.
Are these prices up to date?
Prices come from each product's Amazon listing and are re-checked continuously, so every card shows the latest price we have. A product whose price rises above $400 drops off this list on the next update.
Looking for more than $400?
See all the NAS in the catalog, compared side by side on specs, price and rating.