This listing is for a set of 10 Power Dynamics PB03F EMI filters. These EMI filters have a voltage compatibility of 125/250V. The brand of these filters is Power Dynamics and their model number is PB03F. They are suitable for use with computers, tablets, and networking devices, audio devices, or basically any electronic with a NEMA power plug. These filters are new and have not been used before. Thanks for Looking.