USB-C x2 and USB to USB-C Adapter | The hardware community for PC gamers

Hello,
Unfortunately, the Steam Deck only has 1 USB-C input, I would like to expand this with an adapter so that I can connect 1x external SSD (Windows is running on it) and load the Steam Deck 1x.
Are there special adapters to enable maximum performance when loading and maximum speed with the SSD, or can I buy any China adapter from Amazon?

I would also like to buy a USB to USB-C adapter for the Steam deck, for example to copy data to it as quickly as possible. Are there special ones here too that pass on the speed of the USB stick 1:1, or can I also buy a China adapter here?

Thanks

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