FOR SALE IS ONE (1) NEW BLACK COILED (curley) CORD WITH QD (quick disconnect) to MALE MODULAR PLUG 4P4C BY PLANTRONICS BRAND MPN 26716-01 UPC# 531479628087 OR UPC# 017229003231.THIS TEN FOOT length COILED CORD CONNECTS ANY PLANTRONICS H SERIES HEADSET (encore, supra, etc, see compatible headset below) WITH QUICK DISCONNECT PLUG TO A COMPATIBLE PLANTRONICS AMPLIFIER (m10, mx10, m12, m22, ap15). THIS IS THE OEM AND ORIGINAL COIL CORD YOU RECEIVE WHEN YOU PURCHASE ONE OF THE PLANTRONICS M SERIES AMPS. NOTE.... THIS CORD IS USED BETWEEN YOUR HEADSET AND YOUR PLANTRONICS AMPLIFIER. THIS CABLE IS ALSO USED AS A CISCO DIRECT CONNECT CABLE WHICH CONNECTS A PLANTRONICS H SERIES HEADSET INTO A COMPATIBLE PHONE. PHONE MUST BE COMPATIBLE AND YOUR VOLUME WILL BE LIMITED WITHOUT A PLANTRONICS AMP. CISCO COMPATIBILITY IS TRICKY, SO I URGE BUYER TO STUDY AND LEARN MORE ABOUT COMPATIBILITY PRIOR TO PURCHASE. YOU WILL RECEIVE ONE (1) NEW GENUINE PLANTRONICS QUICK DISCONNECT HEADSET CORD MPN 26716-01, SHIPPED BY USPS FIRST CLASS MAIL..... THIS PLANTRONICS CABLE FEATURES THE PLANTRONICS PLANTRONICS QUICK DISCONNECT ON ONE END AND A STANDARD MODULAR PHONE PLUG (male), ON THE OTHER END. Coiled cord connects any H-Series headset with Quick-Disconnect plug to compatible Plantronics amplifiers, or phones with compatible headset ports. Connect H-series Plantronics headsets, Encore Pro, DuoPro, Tristar series SupraPlus to M10/M12/M22 amplifiers using this cord, OR direct connect Cisco apps for 7941 7961 7971 etc note..... this plantronics 26716-01 coiled cord has been included with plantronics m series amplifiers for many years and works perfectly with the m series amplifiers. the off label use with cisco phones, absent an amplifier, will often yield substandard results (low volume or lack or transmission gain). i always recommend using your plantronics headset with a plantronics m series amplfier, allowing for volume control and microphone gain control. this allows you to attenuate volume to your ear AND volume out, using the microphone gain control..... compatible plantronics headsets and amplifiers..... Plantronics M12, MX10 Plantronics A 20 Plantronics DuoPro H151, H151N, H161, H161N, H171, H171N, H181, H181N Plantronics DuoSet H141, H141N Plantronics Encore H101, H101N, H91, H91N Plantronics FreeHand H131N Plantronics Headset Switcher MX10 Plantronics Mirage H41, H41 with Vista M12 Amplifier, H41N Plantronics StarSet H31, H31C/D, H31CD, H31N Plantronics Supra H51, H51 with Vista M12 Amplifier, H51 with Vista M15 Amplifier, H51N, H61, H61 with M12 Vista Universal Amplifier, H61N, H61N with Vista M12 Plantronics TriStar H81, H81N Plantronics Vista M12..... BID AND BUY HERE IN IN ABSOLUTE CONFIDENCE SINCE I HAVE THOUSANDS OF POSITIVE FEEDBACK AND TEN+ YEARS EXPERIENCE. I SHIP WITHIN TWO DAYS OF RECEIPT OF PAYMENT, OFTEN THE NEXT DAY. $3.81 USPS FIRST CLASS GREEN SHIPPING USING RECYCLED PACKAGING MATERIALS AND ENVIRONMENTALLY FRIENDLY MATERIALS TO ANYWHERE USA. I DO NOT SHIP ANYWHERE ELSE. NO RETURN OR EXCHANGE ON THIS ITEM, SOLD AS IS. HAVE A GREAT DAY AND THANK YOU FOR STOPPING BY.....