Hi!
For the Radxa O6 mini-ITX board, is there any very slim mini-ITX chassi for sale, where you mount ONE half-length PCI card (such as a networking card) horizontally just above above the motherboard?
Also a variation would be same but 2 or 3 PCI slots.
It could make sense to make such an enclosure uniquely for the O6.
As for ATX power supply, there are good “PicoPSU” power supplies which take barrel 12V input.
That 12V input should be fed from a USBC-PD power supply that operates at 20V, really.
(The documentation says it’s required to use a ATX supply in the case that the PCI card pulls more than 15 watts. I started a separate thread to ask if that’s an absolute, or it’s OK for the PCI card to pull 20-25W from the 12V lane, when powered by USBC. Thread here: Orion O6's PCIe x16 slot: Wattage, 12V Q )
I see this one https://www.mini-box.com/CarPC-PCI-Card-enclosure
Perhaps Project Thin X enclosure https://smallformfactor.net/forum/threads/project-thin-x-case-super-small-super-flexible.2389/ https://hardforum.com/threads/project-thin-x-a-custom-mini-pc-case-with-discrete-gpu-build.1961759/
For 3 PCI ports variant, maybe https://www.fractal-design.com/products/cases/ridge/ridge/black/
Perhaps https://www.silverstonetek.com/en/product/info/computer-chassis/ML08/