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Compact black barebone mini PC, 0.51 litre volume, VESA mountable

MSI

MSI Cubi NUC AI+ 3MG-006BUS Core Ultra 9 386H barebone mini PC

SKU CH-VQYZ-X1MGB MPN Cubi NUC AI+ 3MG-006BUS

Barebone mini PC with 16-core Intel Core Ultra 9 386H, dual Thunderbolt 4, WiFi 7, Bluetooth 5.4 and dual 2.5G LAN

  • ProcessorIntel Core Ultra 9 386H
  • Wi-Fi standardWi-Fi 7
  • AI capabilityCopilot+ PC
  • Processor cores16-Core (4P+8E+4LP)
  • Installed memoryNo Memory
  • RAM slots2 × 262Pin SO-DIMM

Support CPU Intel Core Ultra 9 386H

  • AI-ready Copilot+ PC with over 50 NPU TOPS
  • 16-core Core Ultra 9 386H delivers high multi-thread performance
  • 51-litre chassis fits behind any VESA-mounted display
  • Dual Thunderbolt 4 and dual 2.5 GbE ports enable four-screen workflows
  • Fingerprint-secured power button adds biometric login convenience

AI Mini PC Barebone

The MSI Cubi NUC AI+ 3MG-006BUS is a barebone mini PC powered by an Intel Core Ultra 9 386H processor with sixteen cores and an integrated NPU rated above 50 TOPS. It ships without memory or storage so builders can choose their own SO-DIMM modules and M.2 drive. The 0.51 litre chassis measures 37.5 mm thick and includes a VESA mount for discreet placement behind a display. Dual Thunderbolt 4 ports and two HDMI outputs enable a four-display workspace.

Target Users and Limits

This unit suits professionals who need a compact Copilot+ PC for AI-accelerated workloads, multi-monitor productivity and wired 2.5 GbE networking in a space-constrained environment. Buyers who want a complete system with RAM and an SSD pre-installed should look at a fully configured model. The single M.2 2280 slot limits internal storage expansion, so users requiring multiple drives need external enclosures. The integrated Intel Graphics and XeSS support are not aimed at high-end 3D rendering or competitive gaming.

Deciding Specification

The defining specification is the Intel Core Ultra 9 386H processor with its 16-core architecture and NPU exceeding 50 TOPS, which qualifies the system as a Copilot+ PC for on-device AI features. This CPU determines the platform's AI performance ceiling and the workloads it can accelerate locally. Memory capacity tops out at 64 GB across two 262-pin SO-DIMM slots, while Wi-Fi 7 and Bluetooth 5.4 handle modern wireless connectivity. Thunderbolt 4 provides 15 W power delivery and DisplayPort 1.4 alt-mode for dock-free display chains.

How it compares

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

Price $584.99
Typical for this category: the median of 1,735 items is $564.99.

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Specifications

Product
Brand nameMSI
Model nameCubi NUC AI+ 3MG-006BUS
Product colorBlack
Processor
ProcessorIntel Core Ultra 9 386H
Processor cores16-Core (4P+8E+4LP)
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 size218 × 203 × 99 mm
More details
AI capabilityCopilot+ PC

Other versions of this model

2 more in the same range

Questions about this item

Does the Cubi NUC AI+ 3MG-006BUS include RAM and an M.2 drive, or must I buy them separately?

The barebone ships with no memory and no storage; you need two 262-pin SO-DIMM modules up to 64 GB total and one M.2 2280 PCIe drive.

Will my 2.5 GbE switch and Wi-Fi 7 router let the Cubi NUC run at its full network speed?

Yes — dual Intel I226-V 2.5 GbE ports and 802.11be Wi-Fi 7 match that infrastructure without bottleneck.

How can I confirm the NPU is accelerating AI workloads after setup?

Open Task Manager, select the Performance tab and choose NPU; you should see activity when Copilot+ features such as Cocreator or Windows Studio Effects are running.

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