Assuming this is accurate https://superuser.com/questions/471003/atx-po … r-20-or-24-pins , you should be fine with something that draws as little current as an E-350 based system.

Incidentally, why did you want an E-350 ? The integrated graphics might have been OK, but the CPU part was not much to look at except compared to Atom and Pentium 4 CPUs. The only things that the E-350 had going for it were low cost and very low power consumption, IMHO .

Thanks. I know but the low board cost was a good reason while it'd have been maybe better to go for a Celeron J1800 or something like that with maybe some more cpu features and similar GPU good support in Linux and Win. The Atom series I've got had the known iGPU drivers problems and the lack of SSE4. I was thinking at first also to some later model of Amd APU but they are more expensive and running at lower freqs too so and more or less similar speed (while running at lower power demand for sure). A SBC Raspberry like board nowdays cost too much so it looked like a good solution and hoping that it might still work fast enough for a basic home/office config. I only have old configs to build and modern ITX choices are expensive so I was thinking to replace an old desktop microatx config with an old slower itx with external power supply.

I wonder if the 24pin ATX connector four more pins are separated from the other similar 20pin connector rails in some mainboards designs. In that link it's said also the PCI-E cards might use specifically those new voltage rails so I wonder if the mainboard might not boot without it. The on board Radeon GPU should ask a bit of power itself I hope powered from the old 20pin rails too.

386SX wrote on 2022-07-01, 08:08:

Thanks. I know but the low board cost was a good reason while it'd have been maybe better to go for a Celeron J1800 or something like that with maybe some more cpu features and similar GPU good support in Linux and Win. The Atom series I've got had the known iGPU drivers problems and the lack of SSE4. I was thinking at first also to some later model of Amd APU but they are more expensive and running at lower freqs too so and more or less similar speed (while running at lower power demand for sure). A SBC Raspberry like board nowdays cost too much so it looked like a good solution and hoping that it might still work fast enough for a basic home/office config. I only have old configs to build and modern ITX choices are expensive so I was thinking to replace an old desktop microatx config with an old slower itx with external power supply.

I wonder if the 24pin ATX connector four more pins are separated from the other similar 20pin connector rails in some mainboards designs. In that link it's said also the PCI-E cards might use specifically those new voltage rails so I wonder if the mainboard might not boot without it. The on board Radeon GPU should ask a bit of power itself I hope powered from the old 20pin rails too.

Is the board the Jetway NC85-E350-LF...if so, have a read at the linked review and their issue with the 24 pin ATX connector (not the one you might imagine!); also the diagram in the manual seems to show a 20 pin rather than 24 pin one?

https://www.techwarelabs.com/jetway-nc85/all/1/

PC Hoarder Patrol wrote on 2022-07-01, 09:28:

also the diagram in the manual seems to show a 20 pin rather than 24 pin one?

https://www.techwarelabs.com/jetway-nc85/all/1/

I think they should exist two models of that board but I suppose is that early version. Looking at the mainboard photo is a 24pin connector and reading their problems with the broken board I don't understand the logic of the part where the PSU "may have been too much powerful" which doesn't make much sense to me. Or was it into the ATX specs or not.. I suppose a classic good ATX PSU should be enough stabilized on the voltages so I don't understand how the board could have had problems.

Also unfortunately like visible in the images the atx connector is in the uncommon corner of the board which means I'll have to remove the disk if the PicoPSU work because it'd not have space enough to be installed there. I'll fix the disk to the case above the unused PCI bus as tried in the past. I've got a cheap very compact case without much space for anything else but the board and the hard disk.

How about using an ATX extension cable to move the PicoPSU connector away from that corner

PC Hoarder Patrol wrote on 2022-07-01, 11:58:

How about using an ATX extension cable to move the PicoPSU connector away from that corner

That was the idea at first also cause I've seen there are some with 20pin to 24pin "adapter" (using I suppose the existing 20pin rails on the newer pins) but at that point I'd have a PicoPSU that would need to be fixed in a safe way somewhere where it can be cooled and not touching any metal parts. Maybe I'd consider to buy a newer even lower profile PicoPSU compatible unit but it cost almost as much as the board. As soon as I'll receive it I'll test it with the one I've got which is quite cheap but worked ok with the Atom board (having a 24pin connector too but the power demand target is lower around 20W total with the SSD).