Powerup Stay Charged USB-C hub with 3 USB 3.0 ports and an SD and TF card reader is an ideal solution to expand the capabilities of your laptop and other devices with an available USB-C port or Thunderbolt 3 (USB-C) port.USB 3.0 port Data transfer: up to 5Gbps SD/TF card slot Supported memory card capacity: up to 512GB; Read/write speed: up to 100Mbps System requirements Windows 7/8/8.1/10, macOS 10.6 or above operating systems Note: For Windows 7, manual setup is required when you use the hub for the first time Tips For best performance, devices connected to this hub should not exceed total current of 900mA maximum. Otherwise, output current may become unstable or disconnected.Below devices are often rated as follows for your reference:Mouse:100mAPortable hard disk: Max. 500mA USB 3.0 portable hard disk: Max. 900mA Keyboard: Max. 500mA Please double check the current of your devices before connecting to the hub. Material: Aluminum alloy, ABS Interfaces:USB 3.0 Port x 3, SD Card Slot x 1, TF Card Slot x 1 Connector: USB Type-C