Yifeng Li 66f5a95bfc add schematics and layout %!s(int64=2) %!d(string=hai) anos
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isousb211-layout.pdf 66f5a95bfc add schematics and layout %!s(int64=2) %!d(string=hai) anos
isousb211-schematics.pdf 66f5a95bfc add schematics and layout %!s(int64=2) %!d(string=hai) anos