The ResMed AirSense 11 is the latest generation of ResMed's CPAP platform. It's sleeker, quieter, and has built-in Bluetooth and cellular connectivity for the myAir app.
But here's something most people don't realise: the myAir app only shows you AHI, usage hours, mask fit, and a simplified “score.” It does not give you access to your detailed flow waveform data.
Your AirSense 11 still has an SD card. And that card still records the detailed data -- flow waveforms, pressure, leaks, events -- that lets you see what's actually happening breath by breath.
This guide shows you how to get that data into AirwayLab.
What You'll Need
Your ResMed AirSense 11 (AutoSet or CPAP)
A computer (Mac, Windows, or Linux)
An SD card reader (your AirSense 11 may use a micro SD card -- see Step 1)
Step 1: Find the SD Card Slot
Back/bottom of AirSense 11, showing the SD card compartment behind the small panel
The AirSense 11's SD card slot is less obvious than the AirSense 10's. It is located on the side of the device, behind a small cover panel.
On most AirSense 11 models, the SD card slot is on the left side (when facing the machine from the front). Look for a small rectangular cover that pops open.
Important difference from AirSense 10
Some AirSense 11 units ship with a micro SD cardinside a full-size adapter. When you remove the card, you may find a micro SD card seated inside an adapter. Keep the adapter -- your computer's SD slot needs it.
Step 2: Remove the SD Card Safely
Power off your AirSense 11. Unplug it from power.
Open the SD card cover on the side.
Push the card inward gently until it clicks and springs out.
Pull the card out.If it's a micro SD in an adapter, remove the whole assembly.
Don't worry
Removing the card won't erase your data or change your machine settings. Your AirSense 11 stores therapy settings internally.
Step 3: Connect to Your Computer
Insert the SD card (in its adapter if it's micro SD) into your computer's card reader. The card appears as a removable drive. Open it to see the folder structure.
Step 4: Understand What's on the Card
The AirSense 11 SD card structure is similar to the AirSense 10:
SD Card/ ├── DATALOG/ │ ├── 20260101/ │ ├── 20260102/ │ └── ... ├── SETTINGS/ ├── Identification.tgt └── STR.edf
The key folder is DATALOG -- it contains your nightly session data in EDF format. Each subfolder is one day.
AirSense 11 data note
The AirSense 11 records the same core data as the 10 (flow, pressure, leaks, events), though the file format has minor differences. AirwayLab handles both formats. Some early AirSense 11 firmware versions had slightly different DATALOG structures, but AirwayLab's parser detects and adapts to these automatically.
Step 5: Upload to AirwayLab
Go to airwaylab.app/analyze.
Click “Upload SD Card.”
Select the SD card or the DATALOG folder.
AirwayLab detects your AirSense 11 data and runs the analysis. This takes 30-60 seconds.
Privacy note
All processing happens in your browser. Your breathing data never leaves your device.
Step 6: What You'll See
AirwayLab gives you a session-by-session dashboard with:
AHI and event breakdown
Apneas, hypopneas, and central events per session.
Flow limitation analysis
Partial airway narrowing that AHI doesn't count.
Breathing pattern metrics
Regularity, stability, and periodicity of your breathing.
Leak and pressure trends
How your mask seal and pressure responded through the night.
This data helps you understand your breathing patterns. Share it with your clinician if you'd like their perspective.
AirSense 11 vs myAir: What's the Difference?
The myAir app gives you a simplified daily score and basic AHI. It's convenient for quick checks.
Your SD card data goes much deeper. It contains the raw flow waveform -- the breath-by-breath airflow signal -- which is what allows tools like AirwayLab and OSCAR to detect flow limitation, breathing pattern instability, and other patterns that myAir doesn't show.
They're complementary. myAir for quick daily check-ins. SD card data for deeper analysis when you want to understand what's happening.
Frequently Asked Questions
Does the AirSense 11 always come with an SD card?
Most AirSense 11 units ship with a micro SD card pre-installed. If yours didn't come with one, you can insert any micro SD card (formatted FAT32, 2GB or larger).
My AirSense 11 connects to myAir. Do I still need the SD card?
If you want detailed flow waveform data, yes. myAir receives summary data over cellular, not the full waveform data that the SD card stores.
Is AirSense 11 data different from AirSense 10 data?
The core data is the same -- flow, pressure, leaks, events. The file format has minor differences, but AirwayLab handles both automatically.
Can I use AirwayLab and myAir at the same time?
Absolutely. They don't interfere with each other.
Medical disclaimer
AirwayLab is not a medical device. The analysis provided is informational and educational. Always discuss your results with your sleep physician or clinician. AirwayLab does not diagnose, treat, or provide clinical recommendations.
Related reading
Getting Started Guide -- new to AirwayLab? Start here.
Analyze Your Data -- ready to upload your SD card?
Why Your AHI Is Lying to You -- why the myAir score doesn't tell the full story.
See What myAir Isn't Showing You
Upload your AirSense 11 SD card to AirwayLab and get a full breath-by-breath analysis in 30 seconds. Free, open source, and your data never leaves your browser.