Compare NAS Models That Take Only M.2 Drives
2 M.2-only models: DXP480T Plus, four slots; Flashstor 6 Gen2, six slots
As an Amazon Associate we earn from qualifying purchases. Prices and availability come from Amazon.com as of the last update and may change.
Two all-flash models have a specification record here. The UGREEN DXP480T Plus has four M.2 2280 NVMe slots, 8TB the largest drive UGREEN supports, for 32TB raw, 1 x 10GbE, plus built-in Wi-Fi, and memory to 64GB. The Asustor Flashstor 6 Gen2 has six M.2 2280 NVMe slots, 1 x 10GbE, and memory to 64GB. Neither has a SATA bay, so capacity costs what M.2 drives cost, and there are no spinning drives in the box.
All-flash NAS on Amazon.com, by price
New listings of the UGREEN DXP480T Plus and Asustor Flashstor 6 Gen2, the all-flash models with a specification record here.
| Product | Capacity | Price | $ / TB | Type | Prime | Buy |
|---|---|---|---|---|---|---|
| UGREEN DXP480T Plus & US3000, 12000mAh Uninterruptible Battery Power Supply Bundle with UGREEN NAS DXP480T Plus 4 Bay All-Flash SSD NAS | Drives included | $899.98 | - | NAS + drives bundle | - | Buy on Amazon |
The all-flash models, from their makers' pages
| UGREEN DXP480T Plus | Asustor Flashstor 6 Gen2 | |
|---|---|---|
| M.2 slots | Four | Six |
| Link width | Not stated | 1 x PCIe 4.0 x4, 3 x PCIe 4.0 x2, 2 x PCIe 4.0 x1 |
| Largest drive per slot | 8TB | Not stated |
| Processor | Intel Core i5-1235U, 10 cores / 12 threads | AMD Ryzen V3C14, quad core 2.3 GHz (burst to 3.8 GHz) |
| Memory | 8GB DDR5, to 64GB | 8GB DDR5-4800 SO-DIMM (1 x 8GB), to 64GB |
| Network | 1 x 10GbE, plus built-in Wi-Fi | 1 x 10GbE |
| Array types | JBOD, Basic, RAID 0, 1, 5, 6, 10 | Single, JBOD, RAID 0, 1, 5, 6, 10 |
| Power draw, maker's test | 23.14W with drives in use, 16.94W with drives hibernating | 17.9W in operation |
| Noise | Not stated | 18.6 dB |
What four slots hold on the DXP480T Plus
| Drive size | Raw, four drives | Usable, one drive of protection | Usable, two drives of protection |
|---|---|---|---|
| 1TB | 4TB | 3TB | 2TB |
| 2TB | 8TB | 6TB | 4TB |
| 4TB | 16TB | 12TB | 8TB |
| 8TB | 32TB | 24TB | 16TB |
What six slots hold on the Flashstor 6 Gen2
| Drive size | Raw, six drives | Usable, one drive of protection | Usable, two drives of protection |
|---|---|---|---|
| 1TB | 6TB | 5TB | 4TB |
| 2TB | 12TB | 10TB | 8TB |
| 4TB | 24TB | 20TB | 16TB |
| 8TB | 48TB | 40TB | 32TB |
What separates the two
Slots: four on the DXP480T Plus, six on the Flashstor 6 Gen2.
Link width: DXP480T Plus, not published; Flashstor 6 Gen2, 1 x PCIe 4.0 x4, 3 x PCIe 4.0 x2, 2 x PCIe 4.0 x1.
Memory: the DXP480T Plus ships with 8GB DDR5 and the Flashstor 6 Gen2 ships with 8GB DDR5-4800 SO-DIMM, and both go to 64GB. Asustor states ECC support for the Flashstor 6 Gen2.
Where the figures come from
Each maker's own specification page, read on October 12, 2026. Usable capacity is slots minus protection, times drive size, in decimal terabytes.
Checked on October 12, 2026. Sources: UGREEN NASync DXP480T Plus specifications; Asustor Flashstor 6 Gen2 (FS6806X) hardware specifications.
Frequently asked questions
Which all-flash NAS has more M.2 slots?
The Asustor Flashstor 6 Gen2, with six.
How much storage does the UGREEN DXP480T Plus hold?
32TB raw, four 8TB drives, by UGREEN's own maximum. With one drive of protection that is 24TB.