Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards; Supports both traditional CAN 2.0 and CAN FD protocols, up to 8Mbps data rate. Breakout SPI control pins, for connecting with host control boards like STM32/Arduino; Onboard electrical isolation, up to 5KV isolated voltage, high anti-interference capability, stable operation. Onboard lighting proof, ESD, short circuit protection, more safe communication; Onboard voltage translator, select 3.3V /5V operating voltage by jumper. Onboard 120 terminal resistor, configured by jumper; Comes with development resources and manual (examples for Raspberry Pi/Arduino)