Alright I guess it’s on me to explain everything that know right now to be “Fact”
Firstly I know with almost no doubt that the PCIe x4 lane exists.
Second, in order to get access to these lanes one would need to desolder the Tegra X1 and find (I believe) 2 specific pins. This was told to me by CTCaer himself.
Next one would have to run special wires from those 2* pins to outside the socket. Once this is done l, you can re-solder the Tegra X1. This is already proving to be not for the faint of heart. Not all hope is last however I have a good friend of mine in Scotland who is an expert on board level repairs. I explained it to him and sent him the messages between CTCaer and myself and he was able to make sense of it. He said it would be very straight forward for him to do and he is curious enough that he is going to start looking for Switch boards that he has in order to test with. I will update here when I have news on his findings.
Once you have these wires out from underneath the X1. A NVMe slot will need to be soldered to the ends of them. This is also pretty straightforward soldering wise. (At least to my friend). Then you have a working NVMe slot connected to your Switch!
I also have information regarding the software side if things. For at least the start all of the possible outcomes for what could be connected to this slot will have to be done through Linux.
At least for the storage of games on HOS according to CTCaer it is damn near impossible. The amount of work needed to be done in order to get such a thing to work in HOS would require “a month of work or more” to get working. Not to mention these changes would need to be tested and rolled out for
EVERY. SINGLE. VERSION. if HOS in existence. From 1.0.0 to 14.1.1. They would need to be tested and rolled out. This in itself is a insane amount of work. This is all according to CTCaer. After this, I’ll be honest the conversation went off the rails a little bit and I will leave it at that. I hope to release all of the correspondence with CTCaer with his permission so stay tuned for that.
If you have any questions or misc items feel free to ask me and I will do my best to try answer them or have them answered!
I hope this is what you were looking for
@evil_santa