The peripherals are one of the four parts used to assemble the mikropekka computer. They are contained inside the ATK Harri package which will appear once the order for the computer has been paid at the counter in Teimo's Shop. The box also contains the case, monitor, and speakers.

The computer is assembled on the desk inside the player's room at home. Check marks will appear when the part is hovered over the correct spots, and pressing LMB will place it on the desk.