Features: GPIO Expansion Board: The pins of for Raspberry Pi have been expanded, suitable for RaspberryPi 400 interface. Single / Dual Row GPIO: This expansion board, which possess larger area and higher efficiency. Rendimiento Superior: At the top of the terminal, there is the information of the GPIO pin, which is convenient for you to view and operate. Stable Quality: GPIO Interface Adapter Module can be used for interface transfer module, interface extension. High Quality: Made of good-quality material, which is durable with long life and stable structure . Package Includes: 1PC x GPIO Expansion Board Specifications: Material: ABS Size: approx. 5.6x4.9cm/2.20x1.93in Packing: single row / dual row note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you