Conceptronic USB Hub with 4 USB 2.0 ports, Free USB port, USB 2.0, connect 4 USB 1.1/2.0 peripherals to a PC or notebook, The included AC/DC adapter simultaneously provides all ports with power. Conceptronic USB Hub with 4 USB 2.0 ports. Requisitos mínimos del sistema: Free USB port. Interfaz: USB 2.0, Tecnología de cableado: connect 4 USB 1.1/2.0 peripherals to a PC or notebook, Requisitos de energía: The included AC/DC adapter simultaneously provides all ports with power.