The AT91SAM3U-SK is a microcontroller development board based on the Atmel AT91SAM3U Cortex-M3 processor. It is designed for embedded system development and provides a complete environment for developing applications with access to one of the most advanced ARM Cortex-M3 processor families. The board also features onboard Ethernet connections, a USB port, an onboard FTDI UART adapter, and a JTAG header. This board is well suited for rapid prototyping and product development due to the wide range of peripheral connections, integration capabilities, and easy-to-use programming tools.