A VGA splitter is a device that allows one VGA (Video Graphics Array) output to be split into multiple outputs, enabling the simultaneous display of the same video signal on multiple monitors or displays. It typically has one input and two or more outputs. VGA splitters are commonly used in scenarios where a single computer needs to be connected to multiple monitors or projectors, such as in classrooms, conference rooms, or multimedia presentations. They help distribute video signals without degrading the quality and are a cost-effective solution for extending visual content to multiple screens from a single source.