HELP · 3 MIN READ

Which SD card reader should I use for my CPAP card?

Any standard SD card reader works for a ResMed CPAP card. The card is an ordinary full-size SD card, so a laptop's built-in slot or a basic USB reader costing a few dollars is all you need. There is nothing special to buy.

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Which SD card reader should I use for my CPAP card?

What to check before buying

Full-size SD slot
ResMed machines use a full-size SD card, not microSD. Most readers accept both; make sure yours has the larger slot. If you only have a microSD reader, it will not fit.
The right plug for your computer
- Newer MacBooks, many Windows laptops and Chromebooks: USB-C.
- Older laptops and most desktops: USB-A.
- Many iPads: USB-C, but card import is web-only, so you need a computer anyway.
A reader with both plugs, or a small adapter, saves a return trip.
Built-in slot
If your laptop has an SD slot, use it. Nothing else is needed.
Speed does not matter much
Card files are large (2 to 6 GB on a well-used card) but your internet connection is the bottleneck, not the reader. Any USB 2.0 or faster reader is fine.

A reader with both plugs, or a small adapter, saves a return trip.

Built-in slot

If your laptop has an SD slot, use it. Nothing else is needed.

Speed does not matter much

Card files are large (2 to 6 GB on a well-used card) but your internet connection is the bottleneck, not the reader. Any USB 2.0 or faster reader is fine.

Readers that are known to work

Any brand-name USB SD reader. We do not sell or recommend specific products, and we do not take affiliate commissions.

What to avoid

Phone-only readers marketed for Lightning or USB-C phones. Card import is on the web portal, so the reader needs to be on a computer.
Readers that mount the card read-only by default. Harmless for upload, but confusing if you later need to fix the write-lock issue.
Cheap no-name readers that drop the connection partway. The uploader resumes, but it is slower than it needs to be.

The write-lock tab

While the card is out, look at the long edge. The small slider should be away from LOCK. Apnealytics only reads from the card, so the position does not affect upload, but a locked card back in the machine means nothing is recorded tonight.

Mac, Windows, Linux, ChromeOS

All work. Open my.apnealytics.com in Chrome, Edge, Safari or Firefox, choose Import and pick the card's folder. Do not open or edit the files on the card; just upload the folder.

Keep the card safe

Carry the card in the reader, not loose in a pocket. Put it back in the machine as soon as the upload finishes. If you lose it, your machine records nothing until you replace it.

FAQ

Questions people ask

Help center →

Do I need a special SD card reader for a ResMed CPAP?

No. ResMed cards are standard full-size SD cards. A laptop's built-in slot or any USB SD reader works. Check that it has the full-size slot (not only microSD) and the right plug, USB-C or USB-A, for your computer.

Can I read my CPAP SD card on a Mac?

Yes. Use the built-in slot on Macs that have one, or a USB-C SD reader. Open my.apnealytics.com in Safari or Chrome, go to Import and select the card's folder. Do not let macOS "repair" or reformat the card if prompted; eject and reinsert instead.

Can I use my phone to read the CPAP SD card?

Not for Apnealytics today. Card import is web-only because the files are large and need a resumable folder upload. Use a computer. The iPhone and Android apps show everything after the upload and import CSV and JSON exports.