This Cisco Power Injector is a genuine and original PWR-CUBE3 AC power supply for all 7900 series wired phones. It has a 110/220V input, 48V, .38amp output, and includes an adapter. The power cord is optional. Please do not accept any non-Delta power supply, as it is not original and may cause issues. The original UPC is 882658058479, but Amazon sellers have converted the official UPC to a 'compatible' listing. Please ensure that your adapter says "Delta" and do not accept any compatible or compliant adapters. Help keep this listing accurate!