The OEM AC Adapter for Philips Respironics DreamStation Auto CPAP & BiPAP Pro 80W is a power adapter specifically designed for use with these Philips Respironics models. It features a 2-Contact AC Male US connector and a Connector Tip for easy and secure connection. With an output voltage of 12V, this black adapter is a reliable and essential accessory for maintaining the functionality of your CPAP or BiPAP machine.