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Compact black mini PC barebone, no storage installed

minisforum

minisforum MF-MSA2-9955HX(64+0)US barebone mini PC Ryzen 9 9955HX 64GB DDR5 no storage

SKU CH-JQH8-MQH24 MPN MF-MSA2-9955HX(64+0)US

A barebone mini workstation with a 16-core Ryzen 9 9955HX, 64GB DDR5-5600, dual 10G SFP+ and dual 2.5G LAN, triple 8K video output, and three M.2 slots supporting U.2 NVMe up to 15TB

  • ProcessorAMD Ryzen 9 9955HX
  • Wi-Fi standardWi-Fi 6E
  • Processor cores16-Core
  • CPU feature16 cores, 32 threads, max. 5.4 GHz
  • Installed memory64 GB
  • RAM slots2 × 262Pin SO-DIMM

CPU Type AMD Ryzen 9 9955HX

Memory Type 64GB SO-DIMM DDR5 5600

  • 16-core Ryzen 9 9955HX reaches 5.4 GHz for heavy workloads
  • 64 GB DDR5-5600 installed, expandable to 96 GB dual-channel
  • Triple 8K 60 Hz output via HDMI 2.1 and two USB-C DP Alt ports
  • Dual 10 Gbps SFP+ plus two 2.5 Gbps RJ45 for high-speed networking
  • Three M.2 slots support U.2 up to 15 TB and NVMe up to 4 TB each

Barebone mini PC with 16-core Ryzen 9

The Minisforum MS-A2-9955HX is a barebone mini workstation built around a 16-core, 32-thread AMD Ryzen 9 9955HX processor that reaches 5.4 GHz. It ships with 64 GB of DDR5-5600 memory in dual-channel configuration and supports up to 96 GB across two SO-DIMM slots. Integrated AMD Radeon 610M graphics run at 2.2 GHz. No storage or operating system is included.

Adds 10 GbE SFP+ and PCIe 4.0 expansion

This unit upgrades connectivity with two 10 Gbps SFP+ ports based on Intel X710 controllers, plus dual 2.5 GbE RJ45 ports using Realtek RTL8125 and Intel I226-V. A PCIe 4.0 x16 slot operates at x8 and supports bifurcation for add-in cards. Storage capacity expands through one M.2 2280/U.2 slot accepting up to 15 TB U.2 drives and two additional M.2 2280/22110 slots for NVMe SSDs up to 4 TB each.

Suits multi-display workstations needing

Builders who want triple 8K@60 Hz output via HDMI 2.1 and two USB-C DP Alt Mode ports will benefit from the video flexibility. The 10 GbE SFP+ links serve network-attached storage or server clusters. Buyers who need discrete GPU performance, more than three display outputs, or a pre-installed OS and SSD should look at other platforms.

How it compares

Measured against everything we stock in Mini PC Barebone Systems, at today’s prices. Recalculated every night.

Price $1,040.99
Pricier than about 84% of the 1,735 comparable items (median $564.99).

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Specifications

Product
Brand nameMINISFORUM
Model nameMS-A2-9955HX
Product colorBlack
Processor
ProcessorAMD Ryzen 9 9955HX
Processor cores16-Core
CPU feature16 cores, 32 threads, max. 5.4 GHz
Memory
Installed memory64 GB
RAM slots2 × 262Pin SO-DIMM
Supported memoryDDR5 5600
Maximum supported memory96 GB
Dual-channel supportYes
Storage
Installed storageNo Storage
M.2 slots1 x M.2 2280/U.2 NVME SSD (Up to 15 TB U.2, PCIe 4.0 × 4)
2 x M.2 2280/22110 NVME SSD (Up to 4 TB/Slot, default PCIe 3.0 x4, up to PCIe 4.0 x4)
Graphics
Built-in graphicsAMD Radeon 610M
Connectivity
LAN connectionRealtek RTL8125 + Intel I226-V + 2 x Intel X710
Maximum network speed10 Gbit/s
Wi-Fi standard802.11ax
Bluetooth support5.2
Ports & slots
PCIe 4.0 x16 slots1 x PCIe x16 (PCIe4.0 x8, Splitting Supported )
Front USB ports2 x USB 3.2 Gen1 (5 Gbit/s)
1 x USB 2.0
Front audio jacks1 × 3.5 mm combo jack
HDMI ports1 x HDMI 2.1
Rear USB ports1 x USB3.2 Gen2 (10 Gbit/s)
1 x USB3.2 Gen1 (5 Gbit/s)
2 x USB-C (USB3.2 Gen2, 10 Gbit/s,Alt DP2.0)
Ethernet port1 × 2.5Gb LAN(RJ45,Realtek RTL8125)
1 × 2.5Gb LAN(RJ45,Intel I226-V)
2 × 10G SFP+(Intel X710)
Power
Power supply19 V/12.63A
Size & build
Product dimensions196 × 189 × 48 mm
Product weight1.4 kg
Shipping weight3.04 kg
Package size234 × 229 × 119 mm

Other versions of this model

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Questions about this item

What size M.2 NVMe SSD does the 2280 slot accept and what is the maximum capacity per slot?

The two M.2 2280/22110 slots each support NVMe SSDs up to 4 TB per slot, running at PCIe 3.0 x4 by default and up to PCIe 4.0 x4.

How do I install an M.2 drive and what step is commonly missed?

Remove the bottom cover, insert the M.2 2280 or 22110 NVMe SSD at an angle into the slot, secure it with the screw, then enable the drive in BIOS — many users forget the BIOS step.

When will the pre-installed 64 GB DDR5 memory need replacement or expansion?

The 64 GB DDR5-5600 SO-DIMM kit can be expanded to 96 GB using both 262-pin slots; replace modules only if a fault occurs or workloads exceed 96 GB.

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