Service & Support Customer Service Compatibility Guide Installation Guides Available as PDF Documents Vista™, M12 Multilingual Guide: English, French, Portuguese and Spanish Multimedia Headset Switcher™ Adapter, MX10 Bilingual Guide: English and French M10 Installation Diagram Now there's an easy answer to all your hands-free communication needs: the Plantronics M10 Universal Modular Adapter. The M10 works with your choice of Plantronics headsets to deliver the precise level of comfort, audio performance, and hands-free convenience that's just right for each user and every application. M10 features include near-universal compatibility with both single- and multi-line telephones; ergonomically-designed Volume, Headset/Handset select, and Mute controls; handy Quick Disconnect (TM) between the adapter and the headset; and lightweight 10-foot coil cord. The M10 has been replaced by the M22