You can normally connect one BP900 , BP200, or BLC400 button or BP200 button panel to a BrightSign player that has USB functionality. You can also connect two button panels using models with multiple USB ports, such as the 4K1142 or XD1132. However, using any consumer-grade USB hub, you can connect as many as three button panels of either type to any BrightSign player that has a USB port.
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