Banana Pi BPI-M4 use Realtek RTD1395 chip design ,it is a 64-bit quad-core A53 mini single board computer. It features 1 GB of RAM and 8 GB eMMC. It also has onboard WiFi for b/g/n/ac and BT 4.2. On the ports side, the BPI-M4 has 4 USB 2.0 ports, 1 USB TYPE C port, 1 HDMI port, 1 audio jack. support M.2 Key E PCIE 2.0 interface. 

The RTD1395 is equipped with a high-performance quad-core CPU,ARM cortex-A53,with 512K L2 cache embedded. the RTD1395 also integrates and efficient ARM Mali-470 Graphic Processing Unit(GPU) to accelerate 2D and 3D graphics processing. For acceleration of this OSD and 2K user interface, the built-in Streaming Engine of the RTD1395 provides commonly used drawing functions. the CPU is dedicated to applications ,while most of the functions of the RTD1395 is dedicated to manipulating, decoding video streams in various formats. e.g. decoding 4K2K H.265,Full HD MPEG1/2/4/H.264/H.264 MVC,AVC/VC-1,VP8,VP9,AVS,AVS plus, HD JPEG, etc. Video DSP can also handle encoding of up to Full HD with H.264 format. Video decoding and encoding can run simultaneously.

Features:

• CPU: Realtek RTD1395 ARM Cortex-A53 Quad-Core 64 Bit
• GPU: Mali 470 MP4 GPU OpenGL ES 1.1/2.0
• Memory: 2 GB DDR4
• Storage: MicroSD slot with support for up to 256GB expansion and 8G eMMC flash with support for up to 64GB
• Network: 10/100 Mbit/s Ethernet + Wi-Fi 802.11 b/g/n/AC + Bluetooth 4.2
• Video Output(s): HDMI port and multi-channel audio output support 1080P H.264 H.265 2K/4K
• Audio Output(s): 3.5mm jack and HDMI
• PCIE: M.2 Key E slot PCIE 2.0 and USB 2.0
• USB ports: USB 2.0 PORT (x4), USB 2.0 TYPE C(x1)
• GPIO: 40 Pin Header : GPIO (x28) and Power (+5V, +3.3V and GND). GPIO pins can be used for UART, I2C, SPI or PWM
• Switches: Reset, Power and U-boot
• LED: Power Status and Activity status
• Power Source: 5 volt @2A via Micro USB (TYPE C) or PoE support
• OS: Android and Linux