This replacement 80 watt power supply for the PR System One REMstar CPAP machines is compatible with all 60 series System One REMstar CPAP machine models. It's designed specifically for the 60 series machines that have the heated tube option, but will work just fine with the 60 series machines that don't have the heated tube option. The power supply is made up of the "brick" that connects directly to the back of the CPAP machine via a 4-foot cord, and it does not include the detachable C7 power cord which attaches to the wall outlet.
Here's a link to the System One Power Cord that attaches to a wall outlet. The C7 power cord is compatible with both the new REMstar M Series and System One REMstar CPAP machines and the discontinued REMstar CPAP machines.
If your 60 series REMstar (like 260, 460, 560, 660, or 760) does not have the heated tube option, then you can use the 60 Watt power supply instead of this 80 Watt power supply.
Note that this power supply is not compatible with 50 series PR System One REMstar machines like the 150, 250, 450, 550, 650 and 750.