Twoport USB 2.0 hub with an external USB power supply, designed to connect phones and other USB devices while providing stable power for connected peripherals. Backflow prevention design prevents power from flowing back into the PC, enhancing data security and ensuring normal boot. Plug and play and hot plug enabled; no driver installation required and devices can be connected or removed while powered. USB 2.0 hub with backward compatibility to USB 1.1; supports speed, full speed and low speed devices. Suitable for expanding USB ports on a PC or laptop, allowing use of external drives, keyboards, mice, cameras and other USB devices with reliable power. Use scenarios: 1) Expand a computer's USB capability by adding two 2.0 ports for external storage, input devices, or other peripherals, while the external power supply maintains stable operation. 2) Connect a phone or camera for data transfer on a powered hub, preventing power strain on the host USB port. 3) Run multiple USB devices that vary in power and speed requirements (including devices that draw more current) with ensured compatibility and performance.