4-IN-1 USB HUB: Contains one Type-C charging port and one USB 3.0 port and two USB 3.0 ports, providing high-speed data transfer up to 5 Gbps. Only 0.08 pound in weight. Power Delivery: Charges your laptop while connecting USB peripherals and transferring data. This function primarily applies to MacBook 12, and the 2016 and 2017 MacBook Pro 13/15 with Thunderbolt 3 ports, windows laptops and devices with USB-C PD function. USB On-the-Go: Support for your USB-C devices, such as tablets or phones, to act as hosts and to communicate both with USB peripherals and directly with each other when a PC is not available. Plug & Play: With no external drivers or power required, to be used with portable devices such as wired keyboard, USB flash drive, 2.5mm external disk etc. (Due to the power supply limit of the laptop, some high-power devices might cause issues, like 3.5mm external disk, printer, etc); Not for SuperDrive. Unibody aluminum alloy exterior, reinforced TPE cable coating, and ionized finish offer enhanced sturdiness and heat dissipation. EMI Protection prevents interference from other wireless devices.