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Small black square mini PC, VESA-mountable, 37.5 mm thick

MSI

MSI Cubi NUC AI+ 3MG-008BUS barebone mini PC Core Ultra 5 322

SKU CH-C3E2-T55BS MPN Cubi NUC AI+ 3MG-008BUS

Barebone mini PC with Intel Core Ultra 5 322, Wi-Fi 7, Bluetooth 5.4, dual 2.5 Gbps LAN, dual Thunderbolt 4 and 0.51-litre VESA-mount chassis

  • ProcessorIntel Core Ultra 5 322
  • Wi-Fi standardWi-Fi 7
  • AI capabilityCopilot+ PC
  • Processor cores6-Core (2P+4LE)
  • Installed memoryNo Memory
  • RAM slots2 × 262Pin SO-DIMM

Support CPU Intel Core Ultra 5 322

  • Ready for Copilot+ AI with Intel Core Ultra 5 322
  • 51-litre chassis fits behind a monitor via VESA
  • Dual 2.5 Gbps LAN plus Wi-Fi 7 and Bluetooth 5.4
  • Two Thunderbolt 4 ports drive up to four displays
  • Fingerprint power button and MSI Power Link for monitor-controlled startup

Compact barebone for AI workloads

The MSI Cubi NUC AI+ 3MG-008BUS is a 0.51-litre barebone mini PC built around an Intel Core Ultra 5 322 processor with six cores. It targets professionals and developers who want a Copilot+ PC platform for local AI acceleration but prefer to choose their own memory and storage. The chassis includes a VESA mount and a fingerprint-secured power button.

Thunderbolt 4 and dual 2.5 GbE limits

Two Thunderbolt 4 ports provide DisplayPort 1.4 alt-mode video at 4K 60 Hz and 15 W power delivery, enabling a four-display setup from a single unit. Dual Intel I226-V controllers deliver 2.5 Gbps wired networking, while Wi-Fi 7 and Bluetooth 5.4 handle wireless connectivity. HDMI 2.1 outputs add two more 4K 60 Hz display options. Front I/O includes USB 3.2 Gen 2 Type-A, Type-C and USB 2.0 Type-A ports.

Memory and storage you must add

The board offers two 262-pin SO-DIMM slots supporting up to 64 GB of dual-channel memory and a single M.2 2280 PCIe slot for storage. No RAM or SSD is included, so buyers who need a complete out-of-the-box system should look elsewhere. Integrated Intel Graphics handles visual output and supports XeSS upscaling.

How it compares

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

Price $440.99
Cheaper than about 66% of the 1,735 comparable items (median $564.99).

New to this? Buying PC parts with Monero — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameMSI
Model nameCubi NUC AI+ 3MG-008BUS
Product colorBlack
Processor
ProcessorIntel Core Ultra 5 322
Processor cores6-Core (2P+4LE)
Memory
Installed memoryNo Memory
RAM slots2 × 262Pin SO-DIMM
Maximum supported memory64 GB
Storage
M.2 slots1 x M.2 2280 PCIe slot
Graphics
Built-in graphicsIntel Graphics
Connectivity
LAN connection2 x Intel I226-V (2.5G)
Maximum network speed2.5 Gbit/s
Wi-Fi standard802.11be
Bluetooth support5.4
Ports & slots
Front USB ports1 x USB 3.2 Gen2 Type-A (front)
1 x USB 3.2 Gen2 Type-C (front)
1 x USB 2.0 Type-A (Front)
Other front ports1 x External Power Switch
1 x Kensington Lock
HDMI ports2 x HDMI out (supports 4K @60 Hz as specified in HDMI 2.1 & supports MSI Power Link)
Thunderbolt ports2 x Thunderbolt4 Type-C (DP 1.4 alt-mode up to 4K@60 Hz /PD-out15 W) (Rear)
Power
Power supply120 W
Size & build
Product dimensions4.71 in × 4.54 in × 1.48 in
Product weight1.1 lb (0.5 kg)
Shipping weight1.50 kg
Package size221 × 203 × 97 mm
More details
AI capabilityCopilot+ PC

Other versions of this model

2 more in the same range

Questions about this item

Should I pick the 64 GB memory ceiling or the single M.2 2280 slot for my build?

The board accepts two 262-pin SO-DIMMs up to 64 GB total and provides one M.2 2280 PCIe slot for storage, so you can populate both memory channels and still add a fast drive.

What does the Core Ultra 5 322 six-core layout deliver in daily workloads?

Two performance cores and four low-power efficiency cores share 64 GB dual-channel memory, giving responsive multitasking and enough headroom for AI-accelerated apps that use the on-chip NPU.

How many displays can the dual Thunderbolt 4 ports actually drive?

Each Thunderbolt 4 port supports DisplayPort 1.4 alt-mode up to 4K at 60 Hz, so together with the two HDMI outputs you can run a four-display setup.

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