System Requirements PC and Compatible machine USB Port 133MHz CPU or above 16MB RAM or above Windows XP or VISTA or 7 Direct X 7.0 or above or 8 2. Joystick Special Function- First- Continuous Function- Installation- press certain motion key or more motion keys. Click TURBO, so proper motion keys have more quick and continuous function speed than before strike the motion keys once, it will continuously give out motions. Deletion- Click installed motion keys which have more quick speed function. Press CLEAR again, so delete turbo function. Second- Automatic Function Installation- Automatic Function. Press certain or more motion keys, press AUTO, so proper motion keys have automatic function. Deletion- Press the motion keys that have installed and have automatic function, press CLEAR again, so delete Automatic function. 3. Digital and Analog mode select Digital- Connected to USB port in computer. This is a digital mode and the mode light out. Then you can use the directional press to control direction. Analog- Press ANALOG, the mode light on, then its in Analog mode. You can use directional press and the joystick to control direction. Its gaming easily.