An electrocardiograph (ECG) adapter including an adapter body having a first end and a second end is presented. A monitor connector is positioned at the first end of the adapter body, the monitor connector adapted for coupling to an input of an ECG monitor. A first lead receptacle is positioned at the second end of the adapter body, the first lead receptacle configured to receive a first connector having a first pin configuration. A second lead receptacle is positioned at the second end of the adapter body, the second lead receptacle located adjacent the first lead receptacle and configured to receive a second connector having a second pin configuration different from the first pin configuration.