PLANTRONICS M10 AMPLIFIER REFURBISHED WITH 6 Month WARRANTY    

• The M10 Universal Amplifier connects Plantronics headsets to just about any modular single or multi-line phone and offer ergonomically designed volume, headset/handset, and mute controls. 
• Comes with QD cord, and amp to phone cord!
• Works with H-series Plantronics only. (NOT INCLUDED)
• The M10 Works with H-series Plantronics headsets: H141, H141N, H251, H251N, H51, H51N, H61, H61N, H261, HW261, HW261N, H261N, H51N, HW251, HW251N, H41, H41N, H81, H81N, H101, H101N, HW510, HW520, HW530, HW540, HW710, HW720, H91, H91N, H361,H361N, H351N, H171, H171N, HW301N