Product review (1 stars): Stay away: misrepresented product
I have to return this adapter which does not work with my Respironics 450 machine. Even if it is advertised as a replacement for adapter #1058190 for Respironics 450...
As many other have noticed, the adapter fails after a few seconds when the CPAP is trying to teach the correct pressure. Then it stops to work.

This product should not been sold as advertised. It is either total deception or poor manufacturing.
Will update this review about return procedures when return is processed.