As with other ASIAIR models, there are the same two ways to get the files over to your computer.
The first way is to physically transfer files using a USB memory device. If the data was saved originally to something other than a USB memory, just temporarily plug the memory in and use Image Management in ASIAIR to copy the data over to the USB memory. Then unmount the USB memory (by selecting some other memory), and physically remove the USB memory.
The second way is to use the Samba network file server that exists in all Raspbian (the OS used by ASIAIR) computers. You can connect to Samba using either WiFi or the Ethernet LAN connector that is present in all ASIAIR models. Search this forum for "Samba" or search the web for "Samba" if you are not familiar with network file services.
With macOS, just use the "Connect To Server..." item in the "Go" menu of the macOS Finder to discover and connect to the ASIAIR file server, either through WiFi, or through a physical Ethernet cable.
Direct Ethernet connection (Ethernet cable between the ASIAIR and your home router) is usually much faster than WiFi transfer.
Nothing has changed in this aspect with the introduction of version 3 of the ASIAIR hardware.
Chen