The cord can be used to power the CPAP/BiPAP machine in any of the following configurations: CPAP/BiPAP machine by itself, CPAP/BiPAP machine with integrated heated humidifier, CPAP/BiPAP machine with integrated heated humidifier and heated tubing.Compatibility Information: This cord is only compatible with 60 SERIES System One CPAP/BiPAP machines. It will not work with older 50 SERIES System One CPAP/BiPAP machines. For 50 SERIES machines use DC Cord Part 1001956.

Is My Machine Compatible? System One 50 & 60 Series Differences

• BRANDING = 60 SERIES System One machines include the words "System One" in raised embossed lettering stamped on both the machine and (if included) the humidifier. 50 SERIES System One machines feature branding that is painted onto the unit and the words "System One" only appear on the humidifier.
• COLOR = 60 SERIES System One machines feature charcoal gray panels and metallic silver side panels. 50 SERIES System One machines are dark gray with ivory colored side panels
• MODEL NUMBERS = 60 SERIES System One machines include reference numbers on the base of the machine that end in 60. For instance 560P appears on the bottom of all 60 Series REMstar Auto machines. 50 SERIES System One machines include reference numbers on the base of the machine that end in 50. Therefore 550P, 450P, 150P, etc would all indicate 50 Series machines.
• HUMIDIFIER CONNECTIONS = 60 SERIES System One machines feature a 6-pin connection between the CPAP/BiPAP and the humidifier. 50 SERIES System One machines feature a 4-pin connection.