This 5-In-1 USB hub contains one Type-C charging port, one SD Card reader, one Micro SD (TF) Card reader and two USB 3.0 ports, providing high-speed data transfer rates of up to 5 Gbps No external drivers or power sources are required. Primarily for use with portable, low-power consumption devices such as wired keyboards, USB flash drives, 2.5mm external disks, and more. When using devices with high power consumption, you may need to connect them to an external power source. The Type-c male port uses for data transfer between computers and smart devices and female port is only for charging function. Type-C port compatible with Thunderbolt 3 port Provide devices charging while connecting USB peripherals and transferring data. Laptop charging function primarily applies to MacBook 12, and the 2016 and 2017 MacBook Pro 13 / 15 with Thunderbolt 3 ports. Check compatibility of your computer before placing the order The 2.5D unibody aluminum alloy and ionized finish and reinforced TPE cable coating offer enhanced sturdiness and heat dissipation. EMI Protection prevents interference from other wireless devices.