Thanks, I'll check my computer.

Thank you for your help. I can see I need to get a card reader. Does it matter what kind I get? Does it reset the data card every time you take it out?

I'm getting the number from the LCD screen. It lists 0 for large leaks and as far as I can tell I'm not having much if any leakage (I feel around the nasal mask for leaks). I check the numbers after 12 noon GMT (5 am PST). Could there be leaks that I can't feel? Maybe I'll try my full face mask and ...

I have a remstar auto aflex system one. I'm trying to understand why the therapy hours vary so much (as much as 5 hours) when I use the machine all night every night. Thanks.