How to connect a pretty old hard drive to MacMini? I have a rather old iOmega external hard drive which I'd like to connect to a quite new Mac, but I always get confused by Apple plugs so I have no idea what type of cable do I need. 

These are the connectivity options for the hard drive:


and these are for the Mac:


Any ideas what type of cable do I need for connecting these two?
You need an USB B to A cable.

USB B is the type of connector that fits your hard drive. 
USB A is what you'd call "classic USB" and that fits your Mac.



Alternatively you can use an Thunderbolt-to-Firewire adapter and then a Firewire cable. This might offer higher speeds. But it's also the more expensive option.