Question re transferring data

[JPS127]

2 Questions:

I intend to give my early 2015 MBP to a family member, and will need to port over the entire contents and settings to a 2018 MBP. What cable will I need to do this with?

She has a 2012 MBP and will be porting over her data to my early 2015. What cable will she need?

And, if you can help, thanks in advance!

 

[Howard2k]

I would use an external HDD, Time Machine, and migration assistant.

 

[Longkeg]

I believe this can be done wirelessly with migration assistant as long as all machines are on the same WiFi network. It will be considerably slower than with a wired connection though. Here’s some homework:

https://support.apple.com/en-us/HT204350

 

[BrianBaughn]

Data can get screwed up via Migration Assistant and/or macOS upgrades even in the best of situations. I agree that external drives (one for each) should be used…and I would use Carbon Copy Cloner to clone each of the two older computer hard drives to the two externals, then migrate to a clean install of macOS during setup using the externals.

The clones will assure that you still have all data from the original computers.

 

[JPS127]

I actually just received an answer from Apple re the correct cable to use, so I'm good to go!

 

[Fishrrman]

My advice:
Use an external drive, but DON'T use Time Machine.

Instead, use CarbonCopyCloner, which is free to download and use for 30 days:
Carbon Copy Cloner - Download

 

[Marc_S]

I actually just received an answer from Apple re the correct cable to use, so I'm good to go!

What was the answer please?