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Small black cube mini PC with fan grille and front ports

ASRock Industrial

ASRock Industrial 4x4 BOX-7735U barebone mini PC

SKU CH-00Z8-ATB1G MPN 4x4 BOX-7735U

Barebone mini PC with AMD Ryzen 7 7735U, supports 64 GB DDR5 4800, dual LAN up to 2.5 Gbps, Wi-Fi 6E, Bluetooth 5.2, quad display via HDMI 2.1 and three DP 1.4a outputs

  • ColorBlack
  • CPU TypeAMD Ryzen 7 7735U, 8Cores, Max Speed up to 4.75GHz
  • Memory installedNo Memory
  • Memory slot2 x 262Pin SO-DIMM
  • Memory Type SupportedDDR5 4800
  • Max Memory Supported64 GB (32 GB per DIMM)
  • 8-core Ryzen 7 7735U reaches 4.75 GHz for demanding workloads
  • Dual-channel DDR5 4800 supports up to 64 GB for smooth multitasking
  • Two USB4 Type-C ports deliver DP 1.4a video plus high-speed data
  • 5 GbE and 1 GbE with DASH enable fast, managed networking
  • Compact fanned chassis measures 110.0 x 117.5 x 47.85 mm

Barebone mini PC for embedded builds

The ASRock Industrial 4x4 BOX-7735U is a compact barebone system built around an AMD Ryzen 7 7735U processor with eight cores reaching 4.75 GHz. It targets integrators and developers who need a fan-cooled platform for industrial or commercial workloads. The chassis measures 110.0 x 117.5 x 47.85 mm and ships without memory or storage, so the builder chooses capacity.

Thermals, noise and 120 W power input

Active cooling handles the 7735U under sustained load, while the external 19 V 120 W adapter feeds the board. Two LAN ports — one at 2.5 Gbps and one at 1 Gbps with DASH — plus Wi-Fi 6E and Bluetooth 5.2 keep network traffic off the CPU. Integrated AMD Radeon graphics drive up to four displays without a discrete card, reducing total system heat.

Build integration: memory.

Two 262-pin SO-DIMM slots accept DDR5 4800 modules up to 64 GB total in dual-channel mode. A single M.2 Key M slot takes 2242, 2260 or 2280 SSDs on a PCIe Gen4 x4 link, while a SATA 6.0 Gb/s port adds a 2.5-inch drive option. Video exits through HDMI 2.1 and two USB4 Type-C ports with DP 1.4a, plus a front USB 3.2 Gen2 Type-A and combo audio jack.

Highlights

  • 8-core Ryzen 7 7735U reaches 4.75 GHz for demanding workloads
  • Dual-channel DDR5 4800 supports up to 64 GB for smooth multitasking
  • Two USB4 Type-C ports deliver DP 1.4a video plus high-speed data
  • 5 GbE and 1 GbE with DASH enable fast, managed networking
  • Compact fanned chassis measures 110.0 x 117.5 x 47.85 mm

Specifications

BrandASRock Industrial
Model4x4 BOX-7735U
ColorBlack
CPU TypeAMD Ryzen 7 7735U, 8Cores, Max Speed up to 4.75GHz
Memory installedNo Memory
Memory slot2 x 262Pin SO-DIMM
Memory Type SupportedDDR5 4800
Max Memory Supported64 GB (32 GB per DIMM)
Dual Channel Memory SupportedYes
Serial ATA1 x SATA 6.0Gb/s
M.2 Slot1 x M.2 (Key M, 2242/2260/2280) with PCIe Gen4 x4 for SSD
*M.2 Key M 2280(Supported by bracket)
Integrated GraphicsAMD Radeon Graphics
Onboard AudioRealtek ALC233
LANLAN1: Realtek RTL8125BG with 10/100/1000/2500 Mbps
LAN2: Realtek RTL8111FPV with 10/100/1000 Mbps,support DASH function
Max LAN Speed2.5Gbps
Wireless LAN1 x Wi-Fi 6E 802.11ax
(M.2 Key E, 2230 PCIe x1, USB 2.0 for Wireless)
* WiFi throughput speed depends on actual environment and equipment
BluetoothBluetooth 5.2
Front USB1 x USB 3.2 Gen2 (Type A)
2 x USB 4 (Type C, Supports DP 1.4a display output)
Front Audio Ports1 (headphone & microphone jack)
HDMI1 x HDMI 2.1
DisplayPort1 x DisplayPort 1.4a
Rear USB2 x USB 2.0
RJ451 x 1 Gigabit LAN, 1 x 2.5 Gigabit LAN
Other Rear Ports1 x DC Jack
Input12V~19V DC-In Jack
Dimensions1.88" x 4.33" x 4.63"
Weight2.20 lbs.
Packaging1 x 19V/120W Power Adapter
1 x Screw Package
1 x VESA mounting bracket
Shipping weight1.44 kg
Package size225 × 138 × 118 mm

Questions about this item

How do I install DDR5 SO-DIMM modules in the 262-pin slots, and what is the common mistake?

Insert each stick at an angle until the gold contacts disappear, then press down until both side clips click; the mistake is stopping when the stick feels seated but before the clips lock, which leaves the module loose.

Which parts will need replacement first during long-term operation?

The internal cooling fan is the only moving component; plan to clean its heatsink fins annually and replace the fan assembly if bearing noise appears.

What thermal limit appears first when the Ryzen 7 7735U runs sustained workloads in the 47.85 mm chassis?

The CPU will hit its thermal ceiling and reduce clock speeds once the fan reaches maximum RPM and the heatsink can no longer dissipate the 120 W adapter's worth of heat.

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