The HP Poly Studio A2 Mounting Plate for Audio Bridge is a brand new unit designed for easy mounting and positioning of audio bridges. Made by Poly, this mounting plate is a single unit with the model number B42BBAA. It is manufactured in China and does not contain any hazardous materials according to the California Prop 65 Warning. Perfect for organizing and enhancing your home networking setup, this mounting plate provides a secure and practical solution for integrating audio bridges into your home network system.