Eco-friendly, EPEAT Gold certified Philips professional 225PL2 LED display with intelligent Power Sensor detects user presence & adjusts power consumption saving up to 70% of energy bills! Smart Power is an artificial intelligent technology which dynamically analyzes the content of the screen image to achieve power saving. The backlight intensity can be controlled automatically & pre-set by the system to reduce the power consumption by up to 50%, which saves substantially on energy costs. In line with Philips commitment to "sense & simplicity" Philips enables you to make a responsible choice to switch off your monitor at any given time. At the touch of a single on/off button which is conveniently located at the back of the monitor, the monitors energy consumption is reduced to zero. In the off mode, the monitor is completely cut off from AC power & thereby reducing your carbon footprint even further.USB hub allows user to conveniently connect their plug & play multimedia devices such as USB (Universal Serial Bus) memory devices, camera, portable HDD, Web camera, PDA, Printer & many other devices which has USB (Universal Serial Bus) connection available. The conveniently located USB (Universal Serial Bus) 2.0 hub on the monitor allows USB (Universal Serial Bus) 2.0 signals to pass thru to the computer. Note that many devices like cameras & HDD may need to be powered on independently, as they have higher power requirements than the monitor USB (Universal Serial Bus) hub can provide.