* Matrix switching functionality gives you full control of what source is shown on each display with the touch of a button * Built-in signal amplifier lets you extend your connection by up to 210 feet.The ST424MX 4x4 VGA Matrix Switcher/Splitter allows users to share up to four distinct VGA inputs (as well as corresponding audio source) between four independent displays or projectors.Providing convenient push button control, the VGA Matrix Switcher/Splitter allows each of the four input VGA signals and the corresponding audio, to be switched individually meaning that you can have a different source showing on each display or one source showing on both offering maximum flexibility and control.To ensure optimized VGA distribution and signal management even over longer distance signal transmissions, the ST424MX VGA Matrix Switcher/Splitter features a built-in signal booster that facilitates installation of displays at distances of up to 210ft away from the source device, while maintaining flawless signal integrity.Designed to provide maximum control while saving space and eliminating clutter, the ST424MX can be used as a standalone solution or rack mounted using the (included) ear-mounts.Backed by a StarTech.com 1 year warranty and free lifetime technical support.