BIGTREETECH CB1 is an alternative to Raspberry-Pi CM4. The same BTB header as the Raspberry-Pi CM4; CB1 combined with Pi4B, the performance is almost close to the Raspberry-Pi 3B, and can be an alternative to the Raspberry-Pi 3B. Feature： 1. CPU: Allwinner H616, Quad-core Cortex-A53 @1.5GHz 2. GPU: Mali G31 MP2, support OpenGL3.2 3. RAM: 512MB/1GB DDR3L SDRAM 4. Display: HDMI2.0A interface, support 4K display 5. USB 2.0 port 6. 100M Ethernet + 100M WiFi 7. The same BTB header as the Raspberry-Pi CM4 8.Compatible with Pi4B adapter, Manta M4P, Manta M5P, Manta M8P 3D Printer motherboard