Ethernet cable to migrate?

Target Disk Mode is not available over Ethernet. However, it's still possible to transfer data over Ethernet using File Sharing but not using Migration Assistant. Ethernet is faster than most home Wi-Fi as well as more reliable than Wi-Fi. If you desire to utilize Migration Assistant, then you may prefer backing up your old machine to an external drive. You can then connect the drive to the new computer and migrate from it.

This is what I know from experience, and it works. First, I would download and install as many of my apps as possible on the new computer. (They might have to be reregistered.) Then I would set up the transfer using Migration Assistant from the old computer to the new one. That is what it was designed to do and it works very well. Use a USB cable to connect the two computers. Do not attempt the transfer via Wi Fi as it will often result in corruption and you will have problems. I have also used an ethernet cable in the past, but it's not recommended. Follow the instructions and select the files to be transferred. All of your preferences, etc should also be transferred. This is straightforward and it works. I hope it works well for you, too. Good luck.

Migration Assistant does not give you the options to transfer specific programs and data. Some of the experienced users have recommended to transfer only the accounts with MA, download and install the programs, and restore individual data from your backup. That may be what Ronasara meant.

Have a nice day.

I can't say for sure. It's been a while since I did it. I think there is an option to select files, but if I am wrong, accept my apology. Incidentally, you can also transfer your apps, but the "experts" here suggest doing a direct install of them. I guess that ensures a clean unpolluted app which is the most current version.

Thank you for clearing that up. I've learned something too.

Why not setup the Time Capsule® on your network and let the MBA connect to the same network either wirelessly or Ethernet cable to a LAN port on the Time Capsule®? I don't know if MA is usable but you can transfer data via File Sharing. I've never used a Time Capsule®, so I don't know if MA will work, but you can try.