Each USB port has a builtin currentlimiting switch with a maximum output current of 1 A, helping protect connected devices and the hub. Supports a 12V24V external power supply to provide sufficient power output for the connected devices. The VL817 hub controller enables a combined connection of devices across different USB speeds: SuperSpeed (5 Gbps), Speed (480 Mbps), Full Speed (12 Mbps), and Low Speed (1.5 Mbps). Seven USB ports support different USB specifications and speeds and can be used simultaneously, allowing mixed devices to operate at the same time. Practical applications and scenarios Desktop data transfer and peripheral hub: Connect external hard drives, USB flash drives, keyboards, mice, webcams, and other peripherals. All seven ports can be used at once, with each port protected by its own current limiter to reduce the risk of overload. Home office charging and multidevice workflow: Use as a centralized hub for charging and connecting multiple USB devices (for example, a keyboard, mouse, headset, and storage devices) while ensuring stable power delivery through the external 1224V supply. Mobile or workshop environments with 1224V power availability: In vehicles, cabinets, or remote workstations that provide 1224V power, this hub can run multiple USB devices concurrently, supported by the VL817 controller and perport power protection.