- Universal compatibility: Universally compatible with desktop PC, laptop, Mac, tablet, and phone; supports Windows, MacOS, Linux, and mobile devices. - Tool-free installation: Plug and play and supports hot plugging. The LED indicator shows its working status. The hub is designed for insertion into a desk grommet hole. - Grommet hole compatibility: Fits 6 cm standard grommet holes (60 mm). Please verify your desk hole diameter is 6 cm before purchasing. - High speed USB hub: Transfers data at up to 5 Gbps, fast enough to transfer an HD movie in seconds. Driver-free for Windows, Linux, and MacOS. - Output interface: 4 ports USB 3.0. - Use scenarios: - Expand connectivity on a desktop or laptop by adding USB devices such as external drives, keyboards, mice, and USB flash drives while keeping the workspace tidy. - Mount through a desk grommet hole to create a clean, cable-managed setup for home offices, standing desks, or conference tables. - In classrooms or meeting rooms, quickly provide USB access for presentations, wireless dongles, or peripheral devices without opening the computer case.