This power adapter is the replacement for the one coming with your machine. It is compatible with all Philips Respironics 60 series.
There are two different models. 80w vs 60w. The 80w is for CPAPs/BiPAPs with humidifiers. The 60w is for CPAPs/BiPAPs only, which is ideal for travel.
This product is an adapter only. The power cord is not included. It will be purchased separately here: Respironics power cord.
Note it is not compatible with 50 series or M series CPAPs.
Regarding Philips AC Power Supply,
As you don't have stock of 1091398, can i use 1091399 instead.