Install extreme pro ssd on Mac

This is my first external HD. Looking at the installation guide for a Macbook Pro, one of the steps is to install the OS X onto the drive. I don’t think I want to do this if I plan to switch between Mac, Chromebook and PC. Can someone confirm that for me? I assume I would prefer to use ExFAT as my format. Thanks.

Do you want to run the OS from the external SSD? If not, you don’t need to install OS X and can format to exFAT just fine. If you however do want to run the OS from this ssd you’ll need to format it as APFS.

Hi, can anyone help me regarding this this is my first hd card and i do not know how to use in macbook