ITEM NAME:Mcp2515 Module Ef02037 for Arduino Can-Bus Shield Expansion Board Developme V8Q3 Mcp2515 Module Ef02037 for Arduino Can-Bus Shield Expansion Board Developme V8Q3.1 MCP2515 module. SPI interface up to 10 MHz. For Ariduino / Freaduino Fully compatible. Industrial standard 9 pin sub-D connector.