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Compact silver barebone mini PC with VGA and dual LAN ports

Hetai Tech

Hetai Tech J4125 barebone mini PC 1×VGA 2×LAN 2×COM no RAM no SSD no WiFi

SKU CH-S4H9-ZSJK0

Fanless Intel Celeron J4125 barebone with dual LAN, dual COM, VGA and wide 12-19 V input

  • ProcessorIntel Pentium 4 / Celeron
  • Processor socketIntel Socket 478
  • Fanless 10 W quad-core Celeron J4125 runs cool and quiet
  • Two Gigabit LAN ports plus dual RS-232 COM for industrial networking
  • Flexible triple storage with NVMe, mSATA and 2.5" SATA bays
  • VGA output supports dual independent displays
  • Wide 12–19 V DC input suits embedded power systems

Industrial Barebone for J4125 Projects

This Hetai Tech mini PC arrives as a barebone kit built around the Intel Celeron J4125 quad-core processor. It targets system integrators and IT technicians who need a fanless, low-power platform for embedded or industrial deployments. The chassis supports wide 12-19 V input and includes watchdog and auto-power-on features for unattended operation. No memory, storage or wireless hardware is included.

Upgrade Path from Dual-Core Bay Trail

The J4125 option moves from a 22 nm dual-core N2840 to a 14 nm quad-core design with 4 MB cache and a 2.0 GHz base rising to 2.7 GHz. The shift adds two threads, higher graphics capability via Intel UHD Graphics 600 and an NVMe-capable M.2 2280 slot alongside mSATA and 2.5-inch SATA bays. Dual Realtek RTL8111 Gigabit LAN ports and two RS-232 DB9 COM ports are retained for legacy connectivity.

Technicians Building Fanless Appliances

This kit suits builders comfortable assembling RAM, SSD and antenna components inside a compact fanless enclosure. It is not for buyers who want a ready-to-run system with Windows pre-installed, nor for users who need integrated Wi-Fi without sourcing antennas separately. The VGA output supports dual-display synchronous and asynchronous modes, but the platform lacks modern display interfaces such as HDMI or DisplayPort.

How it compares

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

Price $248.99
Cheaper than about 86% of the 1,735 comparable items (median $564.99).

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Specifications

Processor
ProcessorIntel Pentium 4 / Celeron
Processor socketIntel Socket 478

Questions about this item

What RAM slot does the J4125 model provide for adding memory?

The J4125 model has one SODIMM slot supporting up to 16 GB of memory.

How is the J4125 barebone assembled, and what step do buyers often miss?

You must install RAM, an M.2 2280 NVMe or mSATA SSD, and optionally a 2.5″ SATA drive; the step often missed is configuring the BIOS to recognise the new storage before installing an OS.

Which storage drives may need replacement later in the J4125 unit?

The M.2 2280 NVMe SSD, mSATA SSD, or 2.5″ SATA drive you install can be swapped out independently when capacity or speed needs change.

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