Dual Upgrade cards are double-faced. Because they do not have a card back, they can be identified by the symbol in the lower-left corner.
When a ship equipped with a Dual Upgrade card is placed in the play area during setup, its equipped Dual Upgrade card can be placed with either side faceup.
Dual Upgrade cards are not active until they are placed in the play area during setup. Only the faceup side of a Dual Upgrade card is active.