"and" can be used, and commonly is, in this type of sentence. It neither adds nor detracts from the value of the sentence. In other words, it's a perfectly superfluous English word.
It's not made of two German components, but you can see Taste (key) in it and I suppose the ending means something like "collection of ...".
It's not a productive suffix, though (you can't add it to any noun you want), but you can see it in words such as Klaviatur, Hängeregistratur and perhaps it's the same as in Partitur.
Why is there no article before Monitor and Tastatur? Why is it not "Ein Monitor"?
It's just a type of phrasing. In English, you might say "knife, fork, and spoon"; it's not required to say "a knife, a fork, and a spoon".
Weird. I typed the answer exactly right and yet was marked wrong. Triple checked!
Did anyone hear this as "Monitor, Tastatur, Lugar, eine Maus?"
I knew "Lugar" couldn't be right. Even now knowing it's supposed to be "sogar," the normal speed sounds like "Lugar."