Features: Brand new and high quality For Milk V Duo USB&Ethernet has extended 4 USB, 1 RJ45 port, 1 serials port pin, and 1 Type-C input connector for Milk V Duo This expansion board can improve the development efficiency, facilitating their access to commonly used USB peripherals and Ethernet. Allows you to connect multiple USB devices at the same time, making it convenient and efficient. This expansion board supports high speed data transfer and charging, ensuring fast and reliable performances. Suitable for laptops, desktops, tablets, and other devices, this expansion board allows easy connection of external hard drives, keyboards, mouse, printers, and other USB devices, enhancing work efficiency. Specifications: Material:PCB Size:Approx.85x56mm/3.35x2.2inch Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Expansion Board