@whynothugo @brood @hazelnot I have a PCI-e SATA adapter with 6 SATA ports on it and switch the cables as and when I need a drive that isn't plugged in.
Of course I've labelled the drives so they're all sorted into categories.
But I don't leave them connected permanently unless I use them frequently.

This one: amazon.co.uk/Mavis-Laven-Contr