AirSense / AirCurve 10 Location of SDCard
Each AirSense and AirCurve 10 unit comes from the manufacturer with a 2GB SDcard (full sized). Location of the card can be found below.
You can use just about any sized SDCard in the machine though larger sizes are really a bit of a waste since not that much data is stored.
You can also use a MicroSD card inside of a Full size SDCard holder so that you can use the MicroSD card in devices that only accept them for analyzation (Microsoft Surface Pro 3 for example).