The catch
UGREEN NASync DXP2800
There is just one physical Ethernet connection.
Side by side
A two-drive archive with one SSD pair and one network connection suits the DXP2800. The AS5402T is for when you have a specific use for four M.2 slots or a second 2.5GbE connection. Only two SATA bays are in either chassis, so extra flash slots should not be mistaken for room to grow a four-hard-drive archive.
Before you buy
For an office, one two-SSD mirror could hold applications and another could hold active project files. The four onboard M.2 slots that physical layout needs are on AS5402T.
Where this comes from
Four slots are required for two independent two-drive SSD mirrors. AS5402T has four onboard M.2 slots and DXP2800 has two.
The catch
There is just one physical Ethernet connection.
The catch
The extra SSD slots on it bring no SATA archive bays.


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A two-drive archive, separate mirrored SSD workspaces and a second wired path for an office, compared across DXP2800 and AS5402T.
A two-drive archive with one SSD pair and one network connection suits the DXP2800. The AS5402T is for when you have a specific use for four M.2 slots or a second 2.5GbE connection. Only two SATA bays are in either chassis, so extra flash slots should not be mistaken for room to grow a four-hard-drive archive.
Which one fits
Four onboard slots are needed for four SSDs, and DXP2800 has two.
Two SATA bays and at least two M.2 slots come with each.
DXP2800 comes with 8GB and AS5402T with 4GB.
Two Ethernet interfaces are on AS5402T, one on DXP2800.
In practice
For an office, one two-SSD mirror could hold applications and another could hold active project files. The four onboard M.2 slots that physical layout needs are on AS5402T.
Four slots are required for two independent two-drive SSD mirrors. AS5402T has four onboard M.2 slots and DXP2800 has two.
An additional wired path can be supported by the two 2.5GbE ports on AS5402T, while DXP2800 has one. AS5402T is the choice when you have a documented network configuration or a compatible SMB Multichannel plan.
Dual interfaces and SMB Multichannel are documented by the manufacturer for AS5402T. The client, switch and configuration are still part of that requirement.
On either chassis, two equal 12TB hard drives in RAID 1 give about 12TB before overhead. The extra M.2 slots on AS5402T do not turn that mirror into a four-hard-drive parity array.
A two-bay RAID 1 gives the capacity of the smaller member. M.2 and SATA slot counts are separate, and both documented memory ceilings are 16GB.

UGREEN, DXP2800
This is a 2-bay chassis, and 2.5 Gbps is the fastest network path documented for it.

ASUSTOR, AS5402T
A 2-bay chassis whose fastest documented network path is 2.5 Gbps.
Spec by spec
| Spec | UGREEN NASync DXP2800 | ASUSTOR Nimbustor 2 Gen2 | In practice |
|---|---|---|---|
| SATA bays | Two | Two | Two internal SATA drives is the limit for both hard-drive archives. |
| M.2 slots | Two | Four | Only the onboard slots on AS5402T have room for a second pair of SSDs. |
| Ethernet ports | One 2.5GbE | Two 2.5GbE | More topology choices are possible with a second interface, though it does not automatically multiply speed. |
| Supplied memory | 8GB | 4GB | An 8GB application plan may mean buying memory for AS5402T. |
| Manufacturer memory ceiling | 16GB | 16GB | A difference in starting memory does not mean a higher documented maximum. |
Trade-offs
Change of plan
Go with ASUSTOR Nimbustor 2 Gen2. Four slots for the planned SSD layout come with AS5402T.
Go with UGREEN NASync DXP2800. That physical layout is met by DXP2800, which also includes 8GB memory.
Decision guide
An office may want one two-SSD mirror for applications and another for active project files. The AS5402T has the four onboard M.2 slots that physical layout calls for. The DXP2800 has two, so that specific plan would mean merging the workloads into one pool or changing the hardware. Pick the AS5402T only when those separate pools have a real job, because SSDs, backup storage and a compatible pool setup all add to the purchase.
Two 2.5GbE ports let the AS5402T support an additional wired path, while the DXP2800 has one. Choose the AS5402T if you have a documented network configuration or a compatible SMB Multichannel plan. One ordinary file copy does not double just because two cables are plugged in. If the office has one 2.5GbE client path and no need for another, the DXP2800's single port already satisfies that topology.
On either chassis, two equal 12TB hard drives yield about 12TB in RAID 1 before overhead. The AS5402T's additional M.2 slots do not turn that mirror into a four-hard-drive parity array. If the bulk archive is the constraint, choose a four-SATA-bay model. Between these two, the decision comes down to flash layout and networking, and the DXP2800 supplies more memory at the start.
By the numbers
What we found across the NAS devices we compare, plus the checked facts behind each finding.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| UGREEN NASync DXP2800 |
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| ASUSTOR Nimbustor 2 Gen2 |
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Ready to buy
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