Minisforum
Minisforum MS-A2 (Ryzen 9 9955HX)
AMD Ryzen 9 9955HX (16 cores, 32 threads) · 10 GbE · 1.78 L
8.4
$799Nov 92 videos
Minisforum UM890 Pro
A Ryzen 9 8945HS barebone with OCuLink, dual 2.5GbE and socketed DDR5 that rewards owners who bring their own RAM and SSD.
- AMD Ryzen 9 8945HS (8 cores, 16 threads)
- 2.5 GbE
PCPR score
7.5
Good
Best price we’ve seen
$463Nov 9
Checked recently. Confirm at the retailer.
R1
The short version
The EliteMini UM890 Pro packs AMD's Ryzen 9 8945HS and Radeon 780M graphics into a small case with two SO-DIMM slots, two M.2 2280 slots, dual USB4, dual 2.5GbE and an OCuLink port for external graphics. ServeTheHome found the larger chassis cooler and the I/O better than earlier models, but saw mixed results running storage and network cards over OCuLink. It is sold barebone or preconfigured, memory and storage are user-upgradable to 96GB and 8TB, and it uses an external power adapter.
Pros
- Socketed dual-channel DDR5 up to 96GB across two SO-DIMM slots
- Two M.2 2280 PCIe 4.0 slots plus an OCuLink PCIe 4.0 x4 port
- Dual USB4, HDMI 2.1 and DisplayPort support up to four displays
- Dual 2.5GbE and Wi-Fi 6E for networking
- ServeTheHome found the larger chassis runs cooler than earlier small models
Cons
- ServeTheHome had poor results running storage and network cards over OCuLink
- Integrated Radeon 780M limits demanding games without an external GPU
- External power adapter rather than a built-in supply
- Minisforum's store page does not list dimensions or weight
Best for
- Home lab nodes and small servers
- Budget desk PCs with an upgrade path to external graphics
SYS1
Configurations
| Configuration | Processor | Graphics | Memory | Storage | Price |
|---|---|---|---|---|---|
| Ryzen 9 8945HS · Barebone | AMD Ryzen 9 8945HS | AMD Radeon 780M | — | — | $463 |
| Ryzen 9 8945HS · 32GB · 512GB | AMD Ryzen 9 8945HS | AMD Radeon 780M | 32 GB | 512 GB | $935 |
| Ryzen 9 8945HS · 64GB · 1TB | AMD Ryzen 9 8945HS | AMD Radeon 780M | 64 GB | 1 TB | $1,455 |
J5
What you can upgrade later
Memory
UnconfirmedThe maker doesn’t publish its slot layout. Check before buying more memory.
Browse memoryProcessor
UnconfirmedA drop-in upgrade depends on the socket and the maker’s BIOS. Check the board before buying a CPU.
Browse processorJ3
Full specifications
Core
- Processor
- AMD Ryzen 9 8945HS (8 cores, 16 threads)
- Graphics
- AMD Radeon 780M
Memory
- Memory type
- DDR5 SO-DIMM (2 slots)
- Max memory
- 96 GB
Fit
- Memory upgradable
- Yes
- M.2 slots
- 2
Connectivity
- Wi-Fi
- Wi-Fi 6E
- Ethernet
- 2.5 GbE
Ports & I/O
- USB4 ports
- 2
- HDMI outputs
- 1
- DisplayPort outputs
- 1
- Max displays
- 4
Software
- Operating system
- None
Compatibility notes
- Two DDR5 SO-DIMM slots up to DDR5-5600, 48GB per module, 96GB total
- Two M.2 2280 PCIe 4.0 NVMe slots, 8TB total
- OCuLink PCIe 4.0 x4 port for external GPU docks
- Uses an external power adapter; USB4 ports also accept USB-C power delivery
P1
Where to buy
Official store
Seen Nov 9, 2026
$463
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AV1
Video reviews
No verified video reviews yet
We only list videos we’ve confirmed are about this product. You can search YouTube for reviews in the meantime.
AV2
What reviewers and owners say
ServeTheHome
MixedDescribed a modest step over earlier Ryzen models on paper, with cooler running from the larger chassis and better I/O, but mixed luck using OCuLink for storage and network cards.
Review
Read the sourcer/MiniPCs · u/Tight_Door9327
CriticalAn owner reports the mini PC is trapped in a BIOS boot loop after installing a custom Windows ISO, with Secure Boot settings refusing to save and USB boot media being rejected.
2026-08-28
Read the sourcer/MiniPCs · u/durrfee
CriticalA buyer found the unit fails to boot with RAM in the primary slot, working only with a single stick in the secondary slot, and has requested a return from Minisforum.
2026-09-03
Read the sourcer/MiniPCs · u/Tight_Door9327
CriticalThe same owner reiterates that after a custom Windows install the machine loops back into BIOS, ignores bootable USB drives, and reverts disabled Secure Boot to enabled.
2026-08-28
Read the source
Summaries are written in our words. Follow the links for each source’s own review.
R9
Common questions
Does the UM890 Pro come with RAM and storage?
It is sold barebone or preconfigured. The barebone ships without memory, SSD or operating system, and the SO-DIMM and M.2 slots are ready for your own parts.
How much memory can it take?
Minisforum lists two SO-DIMM slots with DDR5-5600 support, up to 48GB per stick and 96GB in total.
Can it use an external GPU?
Yes, through the OCuLink PCIe 4.0 x4 port or USB4. ServeTheHome ran GPUs successfully over OCuLink but had trouble using storage and networking cards on that link.
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