its a card
Sold by NSW CPAP
The information on this page is based solely on product reviews written by customers of NSW CPAP via Trustpilot.
Product details
Brand: ResMed
The AirSense 11™ SD Card is an optional extra for those wanting to conveniently capture data for storage and review between your AirSense 11 and PC. With an easy-to-install SD card, users can store data safely and securely. 
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This CPAP memory card has a large storage volume, with the capacity to hold up to one year of usage data, one month of detailed data, and one week of high-resolution data.
All reviews
Don’t have an android computer.😔
This digital support instrumental is staying compliant and getting the most out of yours therapy.
Is an SD card , was omitted from my order but sent another out quickly
It’s just a sd card. Dont know if its even working