"A computer expansion card that has been repurposed to act as a key to open a door. The label is red."
Keycard (Red) (電子基板 (赤) denshi kiban (aka) ) is a key item in Resident Evil 7: Biohazard.
The Keycard (Red) is meant to be used on the electronically locked door in the Yard.
Keycard (Red) is found in the Workshop in the Processing Area.