Cisco CP-PWR-CUBE-4 Power Supply (Power Lead NOT Included) Cisco Unified IP Endpoint Power Cube 4 - power adapter AC 100-240 V ( 47 - 63 Hz ) Unified IP Phone 8941 Slimline, 8941 Standard, 8945 Slimline, 8945 Standard, 8961 Slimline, 8961 Standard, 9951 Slimline, 9951 Standard, 9971 Slimline, 9971 Standard