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Connecting the Plantronics CS510/CS520 Headset to a Desk Phone with an EHS Cable | Nextiva Support
9V Ac/Dc Adapter Replacement For Plantronics Savi Cs540 Cs510 Cs520 Cs530 C054 Co54 Cs500xd C054-Xd Wireless Headset System Netgear Pwr-090-151 9Vdc Power Supply Charger (Note: Not Fit H - Newegg.com