---
model: CAPA311
lifecycle: active
official_site_status: Available
category: Boards & Modules > Industrial & Embedded Motherboard > 3.5-inch Embedded Board
source: https://www.axiomtek.com/products/boards-and-modules/industrial-and-embedded-motherboard/3.5-inch-embedded-board/capa311
updated: 2026-10-02
---

# CAPA311

3.5" Embedded SBC with Intel® Atom® x5-E3940 Processor, HDMI, LVDS, 2 GbE LAN and Audio

- Category: Boards & Modules > Industrial & Embedded Motherboard > 3.5-inch Embedded Board
- Status: Active

## Key features

- Intel® Atom® x5-E3940 processor
- 1 DDR3L SO-DIMM for up to 8GB of memory
- 2 USB 2.0 and 4 USB 3.0
- 2 full-size PCI Express Mini Card slots

## Specifications

- **CPU:** Intel® Atom® x5-E3940 processor onboard
- **Chipset:** SoC integrated
- **System Memory:** 1 x 204-pin DDR3L-1867 SO-DIMM, up to 8GB
- **BIOS:** AMI
- **COM:**
  - 2 x RS-232/422/485
  - 2 x RS-232
- **USB:**
  - 2 x USB 2.0
  - 4 x USB 3.0
- **Ethernet:** 2 x 10/100/1000 Mbps Ethernet with Intel® I210-AT
- **Display:**
  - 1 x HDMI
  - 1 x LVDS
  - 1 x VGA (optional)
  - 1 x eDP (optional)
- **Digital I/O:** 8-channel in/out programmable
- **Audio:** Mic-in/Line-in/Line-out
- **Storage:** 1 x SATA-600
- **Expansion:**
  - 1 x Full-size PCI Express Mini Card slot with mSATA supported
  - 1 x Full-size PCI Express Mini Card slot
  - 1 x SIM slot
- **Others:**
  - TPM 2.0
  - SMBus; compatible with I2C
- **Battery:** Lithium 3 V/220 mAh
- **Power Input:**
  - 2 x 2-pin connector
  - +12V DC-in only
  - AT Auto Power On function supported
- **Power Requirements:**
  - Intel Atom® x5-E3940 @ 1.1 GHz 8GB DDR3L
  - Max RMS: +12V @1.1A
- **Watchdog Timer:** 65536 levels, 1 to 65535 sec.
- **Hardware Monitoring:** Yes
- **Operating Temperature:** -40°C to +80°C (-40°F to +185°F)
- **Relative Humidity:** 10% - 95% relative humidity, non-condensing
- **Dimensions:** 146 x 104 mm
- **Board Thickness:** 1.6 mm
- **Certifications:** CE
- **Industrial Chassis:** N/A

## Ordering information

- CAPA311HGGA-E3940 (P/N E38E311102) — 3.5" Embedded SBC with Intel Atom® x5-E3940 processor (1.6 - 1.8 GHz, 2MB cache, 9.5W), HDMI, LVDS, 2 GbE LAN and audio

## Sources

- Official product page: https://www.axiomtek.com/products/boards-and-modules/industrial-and-embedded-motherboard/3.5-inch-embedded-board/capa311
- Official datasheet (PDF): https://www.axiomtek.com/Download/Spec/capa311.pdf

## Sales contact

- TC Lee, Business Development Manager, Axiomtek
- Email: tc.lee@axiomtek.com.tw
- LinkedIn: https://www.linkedin.com/in/t-c-lee/
- WhatsApp: https://wa.me/886955040637

_Maintained by TC Lee, Business Development Manager at Axiomtek. This is not the official Axiomtek website: specifications are mirrored from https://www.axiomtek.com, which is authoritative._