Specifications of the S905D3 Public Version Motherboard

CPU

Quad-core   ARM Cortex-A55, 12nm process design, operating frequency 1.908GHz

GPU

ARM   Mali-G31 MP2, supporting OpenGL ES 3.2, Vulkan 1.1, and OpenCL 2.0

Memory

LPDDR4   1GB/2GB (default)/4GB

Flash   Storage

EMMC   8G (default)/16/32G/64G (optional)

Storage   Expansion

Supports   up to 128GB TF card expansion

Display   Interfaces

Specifications

HDMI   OUT

HDMI   2.0, maximum support 2560×1440 output

LVDS

1×   LVDS interface (single-channel, 6-bit dual-channel, 8-bit dual-channel), maximum   support resolution 1920×1080

Audio   Interfaces

Specifications

Headphone   Jack

1×   mono microphone input (analog signal), 1× stereo audio output (analog signal)

Amplifier   Interface

Left   and right stereo output, supports 8Ω 10W dual speakers

Microphone   Interface

1×   mono microphone input (analog signal)

Network   Support

Specifications

Ethernet

1×   standard RJ45 interface, 10/100M adaptive Ethernet

WIFI/Bluetooth

Onboard   WIFI/BT module, supports WiFi 2.4GHz/5GHz (5GHz optional), 802.11a/b/g/n/ac   protocol, Bluetooth 4.0 (supports BLE)

Mobile   Network

1×   built-in MINI PCI_E socket for expanding 3G/4G modules

Basic   Interfaces

Specifications

USB   2.0

3×   USB Host interfaces (1× external standard USB port, 2× 2.0mm-4P sockets) for   connecting high-definition USB cameras, USB drives, keyboards, mice, etc.

USB   OTG

1×   USB OTG interface for system debugging, firmware updates, and can be set to   Host mode

Serial   Ports

4×   serial ports, 3× TTL serial ports (optional 2× RS232 serial ports, 1× RS485   serial port), 1× TTL debug serial port

GPIO

5×   IO ports, supporting input and output

Onboard   RTC

Supports   real-time clock, powered by 1220 button battery, with reserved power supply   socket (1.25mm-2P socket)

Timed   Power On/Off

Supported

IIC   Interface

1×   standard I2C interface for touch and communication

Infrared   Reception

1×   infrared receiver, supports infrared remote control

Other

Specifications

Operating   System

Android   9.0

Power   Socket

1×   external DC12V input socket (DC-5.5×2.5MM female socket), 1× 6P input socket   (2.54mm-6P, supports switch power STANDBY function)

Recommended   Power Supply

12V   2-5A (selected according to peripheral power consumption)

System   Upgrade

Supports   PC/USB drive/TF card upgrade

Working   Environment

Specifications

Operating   Temperature

0℃～70℃, recommended 5℃～35℃

Operating   Humidity

10％～90％, no condensation

Storage   Temperature

-30℃～75℃, recommended storage at room temperature