Thunderbolt 3 is a versatile connectivity standard that combines data transfer, video output, and power delivery into a single port. It uses the USB-C connector, allowing users to connect various devices like monitors, external storage, and docking stations. With speeds of up to 40 Gbps, it enables fast data transfer and supports high-resolution displays. This technology is widely used in laptops and desktops, particularly those from Apple and Intel. Thunderbolt 3 can daisy-chain multiple devices, making it convenient for users who need to connect several peripherals without cluttering their workspace.