Learn Italian: Servono questi componenti per il magazzino. - These components are needed for the warehouse.

With verbs of necessity like servire, the thing that is needed is actually the grammatical subject of the sentence. Since questi componenti (these components) is plural, the verb must be the plural servono. It works just like the verb piacere.

Why does the verb servono come before its subject questi componenti?

While you could theoretically say Questi componenti servono per il magazzino, verbs like servire, mancare, and bastare very frequently place the subject after the verb. This inverted word order sounds much more natural in Italian when stating what is required or missing.

The translation is "These components are needed." How would we specify who needs them?

You use an indirect object pronoun before the verb. For example, to say "We need these components," you would add ci (to us) to make it Ci servono questi componenti. Without a pronoun, the sentence just states a general necessity.

Is magazzino related to the English word "magazine"?

No, it is a classic false friend! Il magazzino means "the warehouse," "the storeroom," or "the stockroom." If you want to talk about a magazine you read, you would use the word rivista.