Cisco AC Adapter + Cord for CP-7941/7942/7945/7961/7962/7961/7971/7975 IP Phones Genuine Cisco IP Phone power cube adapter - 48V/.38amp output Required for 7941/7961/7971 and higher version Cisco IP Phones CHECK MODEL RCD: It MUST say "Cisco" or "Delta" to be genuine. ACCEPT NO COUNTERFEITS! Non-Cisco models may have the WRONG POWER, may damage your phone, and may void your warranty. Counterfeit brands include Tri-Way and have non-approved amperage outputs