During this phase, the turn player may choose a card in their hand and put it into their own Resource in Reboot State. This is optional, and the turn player may choose to not put any card into their Resource even if they are able to. Only 1 card can be put into Resource this way during each Resource Phase.
504 Resource Phase
504.1 "At the start of the Resource Phase" automatic occurrence activates.
504.2 Perform the priority preprocessing (702).
504.3 The turn player is able to choose a card in their own hand, and put the chosen card into their own Resource in Reboot State.
504.4 Perform the priority preprocessing (702). After this step is finished, proceed to the Ignition Phase.