You can try using a power adapter or a battery pack depending on the device.
You can try using a power adapter or a battery pack depending on the device.
If you're looking for affordable CPU and RAM, it's best to skip the motherboard altogether. The board lacks standard mounting points, so unless you're okay with a basic setup in a box, buying a budget motherboard from eBay would be the simplest option.
I don't really focus on the case, but what's the main way to power it?