A dual-screen horizontal setup refers to a display configuration where two screens, typically computer monitors or mobile device screens, are positioned side by side in a horizontal orientation. This arrangement allows for an extended and wider workspace, making it easier to multitask, view content across both screens, and enhance productivity. Users can drag and drop windows, apps, or content from one screen to the other, creating a seamless and expansive computing environment. Dual-screen horizontal setups are commonly used for tasks like video editing, programming, research, and gaming, as they provide more screen real estate for simultaneous work or entertainment.