I have an Samsung 750 EVO SSD Disc in a Macbook 2012. I want to connect i externally to a PC or another Mac.
Alright, I understand that but what I don't understand is what you are actually attempting to do.
If you are just trying to transfer some files between two computers, use
Target Disk Mode
as outlined in the Apple Help article, if you are wanting to transfer a large number of files,
If you are just wanting to transfer some small number of files to back up somewhere to one of your other computers, just set up file sharing with your local network and transfer your files using file sharing.
If you have a lot of files and you don't have a backup, I would suggest buying a new external hard drive with an appropriate cable and a copy of carbon copy cloner.
An appropriate spinner hard drive would be more than adequate with an appropriate connection cable and carbon copy cloner is free to use for a while so neither should break the bank.
My apologies if I have misunderstood what you are trying to do but if it is for creating some backups for important files you don't already have backed up, I would do it as soon as possible if not sooner!!!
- Patrick
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