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BackAnd spacers (see [build notes](build.md | | | R21, R22, R23 | 3 | AudioJack2 | Audio Jack, 2 Poles (Mono / TS)"/>
And spacers (see [build notes](build.md | | | R21, R22, R23 | 3 | AudioJack2 | Audio Jack, 2 Poles (Mono / TS)"/>