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Small black cube mini PC, compact square design, matte finish, front Thunderbolt Type-C port, USB ports visible, 4.88 inch sides

MSI

MSI Cubi 5 12M-015BUS i5-1235U barebone mini PC

SKU CH-ARZH-194XW MPN Cubi 5 12M-015BUS

A 0.7 L barebone mini PC with an Intel Core i5-1235U, dual LAN, WiFi 6E, Thunderbolt 4, two SO-DIMM slots for up to 64 GB DDR4 and a 2.5-inch bay

  • ColorBlack
  • CPU TypeIntel Core i5-1235U
  • North BridgeSoC
  • Memory installedNo Memory
  • Memory slot2 x 260Pin SO-DIMM
  • Memory Type SupportedDDR4 2666

CPU Type Intel Core i5-1235U

  • Compact 0.7 L chassis fits tight spaces
  • Intel Core i5-1235U delivers responsive performance
  • Dual LAN plus WIFI 6E keeps connections fast and stable
  • Thunderbolt 4 plus HDMI 2.0 and DP 1.4 drive three displays
  • Two DDR4 SO-DIMM slots support up to 64 GB memory

Compact barebone for office and home use

The MSI Cubi 5 12M-015BUS is a 0.7 litre barebone mini PC built around an Intel Core i5-1235U processor. It arrives without memory or storage so integrators can choose DDR4 SO-DIMMs up to 64 GB and a single M.2 drive. The 65 W adapter powers the complete system.

Step up from older mini PCs or basic laptops

This unit replaces larger desktops or entry-level portables when a silent, VESA-mountable box with dual 2.5 GbE and 1 GbE LAN is preferred. The jump is worthwhile when you need three simultaneous displays via HDMI 2.0b, DisplayPort 1.4 and Thunderbolt 4, plus front-access 10 Gbps USB ports.

Verify memory, storage and mounting before ordering

Confirm you have two DDR4 260-pin SO-DIMMs and an M.2 SSD in either PCIe or SATA flavour, as the slot auto-detects both. Check that your monitor cables match HDMI, DisplayPort or USB-C with DisplayPort Alt Mode. Ensure a VESA bracket or desk space suits the 4.88 by 4.88 inch footprint.

Highlights

  • Compact 0.7 L chassis fits tight spaces
  • Intel Core i5-1235U delivers responsive performance
  • Dual LAN plus WIFI 6E keeps connections fast and stable
  • Thunderbolt 4 plus HDMI 2.0 and DP 1.4 drive three displays
  • Two DDR4 SO-DIMM slots support up to 64 GB memory

Specifications

BrandMSI
ModelCubi 5 12M-015BUS
ColorBlack
CPU TypeIntel Core i5-1235U
North BridgeSoC
Memory installedNo Memory
Memory slot2 x 260Pin SO-DIMM
Memory Type SupportedDDR4 2666
Max Memory Supported64GB
M.2 Slot1 x M.2 SSD (PCIe/ SATA auto switch)
LAN1 x Realtek RTL8111H
1 x Realtek RTL8125BG-CG
Wireless LANWIFI 6E - AX 215
2.5" Internal Bays1
Front USB1 x Thunderbolt4 Type-C
2 x USB 3.2 Gen2 Type-A
HDMI1 x HDMI-out 2.0b
DisplayPort1 x DisplayPort 1.4
Rear USB2 x USB 3.2 Gen2 Type-A
Power Supply65W Power Adapter
Dimensions4.88" x 4.88" x 2.11"
Weight1.21 lbs.
Shipping weight1.32 kg
Package size224 × 211 × 97 mm

Other versions of this model

1 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

What RAM does the Cubi 5 12M-015BUS take and how much fits?

Two 260-pin SO-DIMM slots accept DDR4 2666/3200 modules up to 64 GB total. Memory is not included.

How do I install RAM and storage, and what step is often missed?

Remove the bottom cover, insert SO-DIMMs at an angle until they click, then mount the M.2 drive (PCIe/SATA auto-switch) with its screw and the 2.5" drive in its bay. People often forget the M.2 screw.

What will need replacing later on this barebone?

The 65 W power adapter and the internal fan cooler are the only moving or wear parts. RAM and storage are user-upgradable, so they can be swapped instead of replaced.

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