See also the console category.

Consoles are a special type of hardware. The Runner can only ever have one console installed at a time.

Page 15, Column 2, Paragraph(s) 8, Core Rule Book
Note: The Runner can only have one piece of hardware with the console subtype installed at a time, as listed in the text box of these cards.

A player is not limited in any way by consoles in deckbuilding.

Page 2, Column 2, Paragraph(s) 8, FAQ
This restriction refers only to active consoles. A player can have multiple copies of a console, and even different consoles, in his deck.

Unlike programs, the Runner cannot choose to trash his/her console to install a new one.

Page 2, Column 2, Paragraph(s) 9, FAQ
The limit of 1 console per player prevents the Runner from installing a second console, even if the Runner wishes to trash the first.
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