They are similar in appearance to real life PCI cards. Their aesthetic is unusually modern for the Fallout Universe, compared to the bulkier, more cumbersome technology that has resulted from the late development of the transistor, such as the military-grade circuit board.
- Decrepit Factory, beside to a skeleton near overturned shelves and a control console. There is a chance that they can also be found on robots and destroyed turrets.
- Mole rat den, behind the waste bins in a green duffle bag.
- Robotics Disposal Ground, inside MKIV sentry bot after initiating self destruct.
- Weston water treatment plant, in the basement on a desk, in the last room, behind a broken terminal.
- They are also found on destroyed robots (like Mister Handies) and turrets, and are particularly common in the remains of turrets.
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