If your Dock has dead USB ports, try this : r/NintendoSwitch
Nintendo Support: USB Ports Not Working on the Nintendo Switch Dock
What are the USB Ports for on the Nintendo Switch?
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A look inside the Nintendo Switch dock - NintendoToday
Nintendo Switch Dock Diagram | Support | Nintendo
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:max_bytes(150000):strip_icc()/002_how-to-use-the-nintendo-switch-with-a-usb-keyboard-and-mouse-4773699-7bc68b28784e4d68b3e761734d42e2ed.jpg "How to Use the Nintendo Switch With a USB Keyboard and Mouse")
How to Use the Nintendo Switch With a USB Keyboard and Mouse
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/cdn.vox-cdn.com/uploads/chorus_asset/file/7803879/nintendo_switch_unit_back_960.png "Nintendo Switch has 32 GB storage, 720p touchscreen (update) - Polygon")
Nintendo Switch has 32 GB storage, 720p touchscreen (update) - Polygon
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/cdn.vox-cdn.com/uploads/chorus_asset/file/7803855/nintendo_switch_unit_front_960.png "Nintendo Switch has 32 GB storage, 720p touchscreen (update) - Polygon")