The SD card slot on a ResMed AirSense 11 sits behind a small door on the left side of the machine. Power the machine off, press the card to release it, copy its contents with a card reader, then open the folder in your browser with AirwayLab to see every night, no software install.
Does it matter? The app score summarises. The SD card is the only place the breath-by-breath record lives.
Want the short version? See the AirSense 11 one-page upload checklist.
Where is the SD card on the AirSense 11?
On most AirSense 11 models the slot is behind a small door on the left side of the machine, facing it from the front. Power the machine off, press the card in gently until it springs out, and pull it free.
Source: the steps in this post. Checked 21 October 2026.
Slot Location by Model
On most AirSense 11 models the SD card slot is on the left side (facing the machine from the front), behind a small cover panel. If you have an AirSense 10 instead, see the AirSense 10 SD card guide.
What You'll Need
Your ResMed AirSense 11 (AutoSet or CPAP)
A computer (Mac, Windows, or Linux)
An SD card reader (the AirSense 11 uses a standard SD card, same as the AirSense 10)
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.
Same card format as AirSense 10
The AirSense 11 uses a standard SD card, not a micro SD card -- no adapter is involved.
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.
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 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, though it leaves out the detail the SD card records -- see our write-up on myAir alternatives.
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.
myAir covers the daily compliance check-in. The SD card is where the detail lives: upload it to AirwayLab and every night is scored for flow limitation and effort patterns, with the waveform behind each flag opening in your browser.
Frequently Asked Questions
Where is the SD card on the AirSense 11?
On most AirSense 11 models the slot is behind a small door on the left side of the machine, facing it from the front. Power the machine off, press the card in gently until it springs out, and pull it free.
Does the AirSense 11 come with an SD card?
Yes, it ships with the card inserted.
What files are on the card?
A DATALOG folder plus settings and summary files.
Can I read it on a phone?
Yes, with a card reader and a browser, AirwayLab runs on mobile too.
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.
Device guides hub -- find the SD card steps for your specific CPAP model.
How to Download ResMed CPAP Data -- the same steps covering both the AirSense 10 and AirSense 11.
How to Download CPAP Data from an SD Card -- the same steps for the other supported machines.
Check your own nights
Upload your AirSense 11 SD card to AirwayLab and get a full breath-by-breath analysis in 30 seconds. Free, built on an open-source engine, and your data never leaves your browser.