I took the EMI shield off of my Switch dock PCB, since @iFixit forgot. STDP2550 Mobility DisplayPort to HDMI converter lurking inside.pic.twitter.com/MhZ81L6c7Q
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If I had to guess, the thing with the Switch video output is it really wants to be connected to a USB-PD source before going into dock mode.
The dock has a microcontroller connected to an internal USB2 port on the hub chip. Possibly used for power management?
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