3.5inch Embedded Board

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EBC 357

Fanless Embedded Computer Intel Atom® Processor E39XX & J3455E Product Family

Inquiry

• On-board Intel Atom® processor E39xx and J3455E processor family CPU upside down design
• CPU upside down design
• 2 x 204-pin SO-DIMM DDR3L
• Triplex display: HDMI/VGA/LVDS (or eDP)
• 1 x M.2 (2242) B key
• 2 x Intel® i210-IT PCI express Gigabit Ethernet
• 4 x SATA 2.0
• 2 x USB 3.0, 4 x USB 2.0, 4-in/4-out GPIO, Mic-in, Speak-out
• Serial port: 3 x RS232, 1 x RS232/422/485 port
• Support AT/ATX mode and single +12VDC input

EBC 357 Series Overview

The EBC 357 Series is a 3.5-inch Single Board Computer (SBC) based on the Intel Atom® E39xx and J3455E processors. Designed with low power consumption and a wide operating temperature range (-20°C to 60°C, depending on CPU model), it features a fanless architecture that ensures reliable performance even in harsh industrial environments. Optimized for various embedded applications, it is ideal for battery-powered devices, multimedia HMI panels, outdoor systems, home automation, and thin clients.

Processor and Memory Configuration

The EBC 357 supports Intel Atom® E39xx series and J3455E processors, both manufactured on a 14nm process.

E39xx Series: Available in dual-core or quad-core configurations, operating at 1.8GHz or 2.0GHz, with 1MB L2 cache per core (shared per two cores) and a TDP of 6.5W or 12W for optimized low-power performance.
J3455E Processor: Quad-core, operating at a base frequency of 1.5GHz (up to 2.3GHz boost), with 1MB L2 cache per core (shared per two cores) and a TDP of 10W.

The system supports up to 8GB of DDR3L SDRAM via two 204-pin SO-DIMM slots, with clock speeds of 1333/1600/1867MHz for flexibility in meeting a variety of application requirements.

E39xx processor

J3455E processor

Display Output Configuration

The EBC 357 offers triple display support via HDMI, VGA, and LVDS (or eDP) interfaces.

HDMI: Supports up to 3840×2160 @ 30Hz (4K resolution)
VGA: Supports up to 1920×1200 @ 60Hz
LVDS: Dual-channel (18/24-bit) up to 1920×1080

This makes the board suitable for multimedia HMIs, outdoor display systems, and industrial control panels that require multiple screen outputs.

Audio and Communication Interfaces

Equipped with a Realtek ALC888s HD Audio codec, the EBC 357 supports high-quality audio input/output through Mic-in, Line-out, and Speaker-out pin headers.

Expandability and I/O Configuration

Expansion: 1 × M.2 (2242) B Key slot for PCIe or SATA expansion modules
Storage: 1 × SATA III port for SSD/HDD connectivity
USB: 2 × USB 3.0, 2 × USB 2.0 (rear I/O) with additional expansion via onboard pin headers
Serial Ports: 3 × RS232 and 1 × RS232/422/485 for broad industrial equipment compatibility
Other I/O: 4-in/4-out GPIO, PS/2 keyboard/mouse, SMBus, and fan connector

Storage and Power

The board supports a single +12V DC power input and allows jumper-based selection between AT and ATX modes. With a fanless design and integrated heat spreader, it delivers high-reliability cooling performance for long-term, unattended operation.

Environmental Tolerance and Dimensions

Operating Temperature: E39xx models: -20°C to 60°C / J3455E model: 0°C to 60°C
Storage Temperature: -20°C to 80°C
Humidity: 10% to 90% RH (non-condensing, operating)
Dimensions: 148mm × 102mm, 3.5” SBC form factor
Certifications: CE/FCC Class A compliant

Application Suitability

The EBC 357 combines extended temperature support, 4K triple display output, dual LAN, and diverse I/O expandability in a compact, low-power 3.5” embedded board. It is the ideal solution for outdoor installations, industrial automation, smart city systems, and multimedia HMI applications that demand high performance and reliability in challenging environments.

If you want, I can also prepare a professional datasheet-style table for this so it’s ready for immediate inclusion in product documentation or marketing material. That way it will match standard industrial PC spec sheet formats.