Compatible with U disks, card readers, USB mice, USB keyboards, scanners, digital cameras, digital video cameras, USB sound cards, external hard disk enclosures, and other USB equipment. Hot swap function supported for easy connection and removal without rebooting the host device. No driver required, plug and play for straightforward use. Expands 3 USB 2.0 ports, with up to 300 mA of power available on each port. Use scenarios Office or travel setup: Use a laptop with limited USB ports by adding a keyboard and mouse while also accessing a USB flash drive or card reader from the same hub. Photo or data transfer: Connect a digital camera or card reader to quickly transfer images and data without unplugging other devices. Audio or peripheral enhancements: Pair a USB sound card or other USB peripherals through the hub for improved audio or expanded connectivity on a desktop or laptop.