Specifications

Power Supply: 9 Volts DC from PET/CBM internal expansion power connector
External Keyboard Interface: PS/2
Internal Keyboard Interface: Edge connector for existing harness
Architecture: 8 Bit flash MCU and analog crosspoint
Connectors: Internal Keyboard, External Keyboard, Power, Reset, Programming
Size (approx): 2.8" by 2.1"
Weight (approx): 40 g (1.4 ounces)
Mounting: inside front, left, using 4 nylon standoffs with adhesive backing (included)

Connector Descriptions:

Internal Keyboard: The edge connector that is mounted to the PET/CBM's keyboard must be pulled off the existing keyboard and pushed onto the edge of the interface circuit board.

External Keyboard: The PS/2 Keyboard's round PS/2 (mini-DIN) connector is inserted into the PS/2 socket on the interface.

Power: The interface power connector is pushed on the PET's expansion power header located at the left rear.

Reset: Optionally, the reset wire clip can be connected to the trigger input of the PET's reset timer. No soldering required.

Programming: This connector should remain unconnected. It is used to program or update the interface at the factory.