We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Small black square barebone mini PC with compact form factor

ASRock Industrial

ASRock Industrial NUCS BOX-255H barebone mini PC

SKU CH-0P91-AA4FA MPN NUCS BOX-255H

Barebone mini PC with Intel Core Ultra 7 255H, dual DDR5-6400 SO-DIMM slots up to 96 GB, dual M.2 PCIe Gen4, Intel Arc graphics, 2.5 GbE LAN, Wi-Fi 6E and Bluetooth 5.3

  • ColorBlack
  • AI FeaturesAI Accelerated
  • CPU TypeIntel Core Ultra 7 255H
  • Memory installedNo Memory
  • Memory slot2 x 262Pin SO-DIMM
  • Memory Type SupportedDDR5 6400

CPU Type Intel Core Ultra 7 255H

Options 1 Ethernet Port

  • AI-ready performance from Intel Core Ultra 7 255H processor
  • Expandable DDR5 6400 memory up to 96 GB across two SO-DIMM slots
  • Dual M.2 slots with PCIe Gen4x4 and Gen4x1 for fast storage
  • Integrated Intel Arc graphics drives multiple displays via HDMI 2.1 and USB-C video
  • 5 Gbps LAN plus Wi-Fi 6E and Bluetooth 5.3 for modern connectivity

Ready-to-build mini PC with Core Ultra 7 255H

The ASRock Industrial NUCS BOX-255H is a barebone mini PC built around the Intel Core Ultra 7 255H processor. It arrives without memory or storage so integrators can choose DDR5 6400 SO-DIMMs up to 96 GB total and two M.2 SSDs. Intel Arc graphics, 2.5 GbE LAN, Wi-Fi 6E and Bluetooth 5.3 are integrated on the board.

Suits builders who want AI-accelerated compute

This unit fits developers and system assemblers who need a small footprint with modern I/O including USB4, Thunderbolt 4 and dual HDMI 2.1 outputs. Buyers who want a complete system with RAM and an SSD pre-installed should look at configured models instead of this barebone kit.

Check your DDR5 SO-DIMM

You must supply two 262-pin DDR5 6400 SO-DIMM modules, each up to 48 GB, to reach the 96 GB maximum. The board offers one M.2 2280 slot with PCIe Gen4x4 and one M.2 2242 slot with PCIe Gen4x1 for storage. Verify that your chosen drives match these keying and lane configurations.

Highlights

  • AI-ready performance from Intel Core Ultra 7 255H processor
  • Expandable DDR5 6400 memory up to 96 GB across two SO-DIMM slots
  • Dual M.2 slots with PCIe Gen4x4 and Gen4x1 for fast storage
  • Integrated Intel Arc graphics drives multiple displays via HDMI 2.1 and USB-C video
  • 5 Gbps LAN plus Wi-Fi 6E and Bluetooth 5.3 for modern connectivity

Specifications

BrandASRock Industrial
ModelNUCS BOX-255H
ColorBlack
AI FeaturesAI Accelerated
CPU TypeIntel Core Ultra 7 255H
Memory installedNo Memory
Memory slot2 x 262Pin SO-DIMM
Memory Type SupportedDDR5 6400
Max Memory Supported96GB (48 GB per DIMM)
Dual Channel Memory SupportedYes
Storage InstalledNo Hard Drive
Serial ATA1 x SATA 6.0Gb/s
M.2 Slot1 x M.2 (KEY M, 2280) with PCIe Gen4x4 for SSD
1 x M.2 (KEY M, 2242) with PCIe Gen4x1 for SSD
Integrated GraphicsIntel Arc Graphics
Onboard AudioRealtek ALC256
LANIntel I226LM
Max LAN Speed2.5Gbps
Wireless LAN802.11ax
WiFi GenerationWi-Fi 6E
BluetoothBluetooth 5.3
Front USB2 x USB 3.2 Gen2 (Type A)
1 x USB4/Thunderbolt 4 (Supports DP2.1 display output)
1 x USB3.2 Gen2x2 (Type-C, Supports DP1.4a display output)
Front Audio Ports1 (headphone & microphone jack)
HDMI2 x HDMI 2.1 TMDS
Rear USB2 x USB 3.2 Gen2 (Type-A)
RJ451 x 2.5 Gigabit LAN
Input12V~24V DC-In Jack
Power Supply19V/120W
Dimensions4.63" x 4.33" x 1.50"
Weight2.2 lbs.
Packaging1 x 19V/120W Power Adapter (Core Ultra 7)
1 x VESA mount bracket
Shipping weight1.63 kg
Package size241 × 155 × 132 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

Which DDR5 SO-DIMM modules should I buy to reach the 96 GB limit on this NUCS BOX-255H?

Install two 48 GB DDR5 6400 262-pin SO-DIMMs to populate both slots and enable dual-channel operation at the maximum supported capacity.

Can I keep my 2.5 Gigabit LAN switch and Wi-Fi 6E router when adding this mini PC?

Yes, the onboard Intel I226LM provides 2.5 Gbps wired Ethernet and the wireless card supports Wi-Fi 6E plus Bluetooth 5.3, so existing 2.5 GbE and Wi-Fi 6E infrastructure works directly.

How do I confirm the Intel Arc graphics are driving both HDMI 2.1 ports after assembly?

Connect displays to both rear HDMI 2.1 outputs, boot into the OS, and verify in Device Manager or graphics control panel that Intel Arc is detected and both monitors show active signals.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.