Features: Powerful CPU - the Seeeduino XIAO is equipped with an ARM Cortex-M0+ 32-bit 48MHz microcontroller, which is three times faster than Arduino-compatible Uno and Nano. This Arduino-compatible board has 256KB flash memory and 32KB SRAM. Seeeduino XIAO is the smallest Arduino-compatible board in the Seeeduino series. The device has 14 GPIO pins, each of which supports 11 analog channels, 11 digital channels, I2C x1, UART x1, SPI x1, and USB Type-C interface x1 in a compact size of 20mm x 17.5mm (approximately the size of a thumb). The Seeeduino XIAO development board is fully compatible with Arduino IDE, allowing users to easily create small projects using the extensive Arduino-compatible library. Suitable for wearable devices, rapid prototyping, DIY keyboards, USB to multi-channel TTL, USB host mode, and other applications. Specifications: Item: Seeeduino XIAO Development Board Chipset: SAMD21 Size: approximately 20 x 17.5mm CPU: ARM Cortex-M0+ CPU (SAMD21G18) 48MHz Storage: 256KB Flash, 32KB SRAM I/O pins: 14 GPIO, 11 analog and digital, 1 DAC function, 10 PWM functions, 1 I2C, 1 UART, 1 SPI Interface: USB Type-C power and download interface, 1 user LED, 1 power LED, 2 download LEDs, reset interface Note: Color may vary slightly due to differences in monitor settings. Slight size variations may occur due to manual measurement. Package includes: 1 x Seeeduino XIAO Development Board