Rear panelVoltage selector. Use this switch to select the appropriate system input voltageaccording to the voltage supply in your area. If the voltage supply in your area is100-127V, set the switch to 115V. If the voltage supply in your area is 200-240V, set theswitch to 230V.Setting the switch to 115V in a 230V environment or 230V in a 115V environment will seriouslydamage the system!Power connector. Plug the power cord to this connector.RATING: 110-120V~ / 220-240V~, 6A/3A, 50-60HzUSB 3.0 ports. These Universal Serial Bus 3.0 (USB 3.0) ports connect to USB 3.0 devicessuch as a mouse, printer, scanner, camera, PDA, and others.• DO NOT connect a keyboard / mouse to any USB 3.0 port when installing a Windows®operating system.• Due to USB 3.0 controller limitations, USB 3.0 devices can only be used under a Windows®OS environment and after the USB 3.0 driver installation.• USB 3.0 devices can only be used for data storage.• We strongly recommend that you connect USB 3.0 devices to USB 3.0 ports for a faster andbetter performance from your USB 3.0 devices.ASUS K30AM / K30AM-J15ENGLISH