Kestrix NS-3977 Ultra 4-Bay NAS (2.5GbE)
NAS Systems · Kestrix · SKU NS3977-ULTRA · Released 2026 · Updated 2026-10-25
Key facts
| Benchmark index | 2,228 (NAS Systems scale) |
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| Category rank | #29,990 |
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| Street price | $299 |
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| Power | 39 W |
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| Performance per dollar | 7.45 |
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| Released | 2026 |
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Specifications
| Brand | Kestrix |
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| Model | Kestrix NS-3977 Ultra |
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| Drive bays | 4× 3.5"/2.5" SATA, hot-swappable |
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| Max raw capacity | 112 TB |
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| Processor | 4-core ARM, 1.7 GHz |
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| Memory | 2 GB DDR4 |
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| Network | 2× 2.5GbE |
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| M.2 NVMe slots | None |
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| PCIe expansion | None |
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| RAID | RAID 0/1/5/6/10, JBOD |
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| File system | Btrfs, ext4 |
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| USB | 2× USB 3.2 Gen 2 (10Gbps) |
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Related guides
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| Mirenta NS-3452 XT 4-Bay NAS (2.5GbE, M.2 Cache) | 4,052 | $809 | Compare |
| Halcyra NS-8777 Plus 5-Bay NAS (2.5GbE, M.2 Cache) | 5,474 | $1,399 | Compare |
| Kestrix NS-6896 Prime 2-Bay NAS (1GbE) | 1,459 | $159 | Compare |
| Mirenta NS-5867 Max 2-Bay NAS (2.5GbE) | 1,780 | $179 | Compare |
| Mirenta NS-5685 Prime 6-Bay NAS (1GbE, M.2 Cache) | 4,743 | $1,009 | Compare |
| Kestrix NS-3933 Max 8-Bay NAS (10GbE, M.2 Cache) | 5,783 | $1,759 | Compare |
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Cite this page: Hardware Spec Index, “Kestrix NS-3977 Ultra 4-Bay NAS (2.5GbE)”, https://vextor7.com/item/1928548 (accessed 2026-10-25).