2 layers176.8 × 100.3 mmUMI4Mfordp2002/music2xxxA clone of the Hybrid Music2000 Midi interface for the Acorn BBC Microcomputer103 parts1
2 layers100 × 150 mmMusic2xxxfordp2002/music2xxxA clone of the Hybrid Music2000 Midi interface for the Acorn BBC Microcomputer57 parts1