$ 0 0 The top board is the Cassette interface. Going down you see two blank slots in the extension bus that I added. The front of the Cassette Interface card, the two jacks, top left side are where the cassette player plugs into for the recording and playing back of the tapes. Back of the Cassette Interface card, you can see that I hard wired the jacks and ran the wires to a new set of jacks in the back of the new computer case. This is the tape cassette player that I used with the Apple 1 computer. Read and write functions to the Cassette player was controlled by a switch on the front panel on the new computer case.Content Type: DocumentsPeripheralsComputer Type: Apple I