What You Will Get: 15CM Warm White Bit Lights*2 with 1 pack Compatible With All Major Brands: It is designed to decorate your model, which could be perfectly fit the bricks, and no damage to your model High Quality: High-grade ABS materials and copper is adopted to ensure its safety, the durability. And they featuring anti-heat and anti-burning can prolong their service time for you.5V 2A bring you a safer experience Installation: Please note that the light wires cannot be connected to the USB port alone, an expansion board is required for connection.During installation, the golden wire of the interface needs to be connected to the golden needle of the expansion board DIY Lights, Saving Money: You don't need to order a complete set, you can just choose to buy one or more kinds of lighting together with expansion board and usb cable to connect light wires, with a variety of choices, and the effect is beyond imagination DIY Lighting Compatible with Lego