For folks who want to just run medium mode or want to see if the stand alone unit (no PSU) comes sooner, I think I found a pretty cool product for only $34. It's rated 28V/5A and comes with 2 USB-C ports (my thinking was running two nanos from this)!
***----> Actually now that I'm thinking about it, 140W rating though not going to be enough. I think conservatively if you are running medium mode, you should plan for at least 90-100W allocation per unit. Maybe someone can chime in and confirm this. If I can find one of these with a higher rating, I'll update.
https://www.amazon.com/Adapter-Charger-3-Port-Compatible-Laptop/dp/B0CM69NR1N/ref=sr_1_1?yeah it is gan based they all seem to run hot.
They dropped the ball a bit on psu.
I like the unit but they should have done two speeds.
60 and 90 watts. And they could have done a better psu.
https://www.amazon.com/ORIGINAL-GENUINE-240-Watt-ADAPTER-CHARGER/dp/B07PPQYX3C/ref=asc_df_B07PPQYX3C?240 watts 19.5 volts 12.1 amps would have been the proper one if you want to do the high speed.
Oh thanks for reminding me as I forgot to ask you. Do you by chance have any kind of thermo reader? I was curious if you are running your nano 24/7 and if so, say after a couple days if you took a temp reading on your PSU? I saw someone online in a video post a snip of the thermo reader and it was 60 degrees celsius. But I don't know which mode was running and what duration.
I would want to go medium mode 24/7 and what I'm going to do is mount the PSUs in a rack in such a suspended way that fans will hit them in two directions. I'm hoping this will keep PSU temps significantly down.
Aside from that, if you just ran them and even if the PSU was on the side, wonder if there is ceiling on just how high the temp can hit. But I think in terms of sustainability, I don't see how you don't configure some kind of fan/cool air flow specifically for the PSUs (and I'll set something up for the nano too)