
Description

Overview
The IoT-40A is a high-performance, cost-effective smart terminal motherboard built on the Allwinner A40i 4-core processor, pre-installed with Android 7.1. Its classic small board design ensures compatibility with legacy models, making it a seamless upgrade for existing systems. Designed for digital signage, smart displays, and self-service terminals, it offers essential I/O, software support, and system customizability in a compact package.
High Cost-Performance Processor
- CPU: Allwinner A40i, Cortex-A7 quad-core, up to 2GHz
- 5× faster than A20 processor
- GPU: Mali400MP2, supports popular video and image decoding formats
- Operating System: Android 7.1 (customizable)
- Ideal for advertising machines, e-menus, and interactive kiosks
Classic Board Design – Backward Compatible
- The IoT-40A continues the industry-proven A20 layout with:
- Identical size and mounting holes as IoT-20A and DS831
- Drop-in replacement minimizes hardware upgrade time and cost
- Best suited for integrators upgrading legacy terminal systems
Seamless Software Integration
Supports ShiMeta’s free information publishing software, making device content management simple, centralized, and efficient.
Rich Interfaces for Peripheral Expansion
- 3 USB Ports: 1 pin header, 2 standard USB-A ports
- 2 Serial Ports: TTL/RS232 (expandable)
- GPIO/ADC for device-level integration
- Network: 1×10/100M adaptive Ethernet
- Plug-and-play ready for:
USB cameras
Touchscreens
Code scanners
Card readers
IoT sensors
System Customization Support
- Offers API reference code and system call interfaces
- Supports development of custom Android applications
- Flexible for industry-specific UI and middleware
Application Scenarios
- The IoT-40A is widely adopted in the following smart terminal environments:
- Digital advertising machines
- Electronic meal ordering plates
- Shared charging stations
- EV charging piles
- Self-service kiosks & terminals
- Smart display dashboards

Frequently Asked Questions (FAQ)
Can IoT-40A replace IoT-20A and DS831 directly?
Yes. It uses the same dimensions and mounting holes, ensuring plug-and-play replacement.
What system is pre-installed?
Android 7.1 is standard. Custom versions or Linux/OpenHarmony can be supported upon request.
What kind of interfaces are available?
3 USB ports, 2 serial ports, GPIO/ADC, and Ethernet—ready for mainstream peripherals.
Does it support application-level customization?
Yes. System API reference code is provided to support upper-layer application development.
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