K-MAINS AC Adapter Replacement for Jabra Pro 920 mono DUO Headset DC Power Supply Charger Cord CableK-MAINS products are CE / FCC / RoHS certified, tested by the manufacturer to match and / or exceed the OEM specifications.If you don't know whether the machine can use this adapter, you can contact us directly from Your Account.select the "Contact Seller" button to send us an e-mail message. We would be glad to solve any problem for you within 24 hours.