Features: Support motherboard: for Pico development board, in-line connection Expansion board interface: PICO pin interface, steering gear interface 4 SPI interface, IC-row port.2.IC- row pin interface x2, serial row pin interface 2 serial row port x2.SWD debugging interface, 3.3V power supply interface, 5VPower supply interface Power supply mode: PICO development board power supply Protection scheme: overcurrent protection and short circuit protection Application areas: PICO sensor experiment, PICO External device extension, PICO Robot projects. Specifications: Steering gear interface: 4-way 5V steering gear interface Dedicated interface: PICO development board interface Onboard indicators: power indicator, 3.3V indicator, 5V indicator Size:approx 95x58MM/3.74x2.28in Material:PC+metal Colour:As shown Note: Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. Package includes: 1 x Expanding Board