Raymarine forum

What is the most appropriate size for a micro sdcard. I am a cruiser and will have up to 100 routes stored containing hundreds of way points.

Also, once I have the card, is this where I copy updated operating system files to be used to update the software on my Axiom 9?

Welcome to the Raymarine Forum Solitude,

GPX files are relatively small. While microSD memory cards of up to 32GB may be used with Axiom / Axiom Pro MFDs, a microSD memory card having a capacity of 4GB would typically be recommended for a memory card which will be used to backup / transfer waypoint/route/track data and to support updating the MFD's software. Should one be seeking a microSD memory card for the aforementioned purposes and which may additionally be used for storage of LightHouse charts, then a 32GB memory card would be recommended.