This version is compatible with Linux, as ASUS NUC models usually support various Linux distributions. However, there are occasional issues with certain hardware components, such as graphics drivers, that may not be fully supported in Linux. It is advisable to check the specific Linux compatibility details for the model to ensure that all functions work as expected.

As this is a barebone model, RAM and storage are not included in the scope of delivery. You will therefore need to buy additional DDR5 RAM and an SSD to fully utilise the system. The barebone includes the case, motherboard and processor.

According to my research, there is only a regional difference here, but we will include a suitable power cable in any case.

Here are 3 SSDs that are compatible and recommended by the manufacturer. https://www.digitec.ch/fr/comparison/49106585-21575421-21575425 Regarding the two identical Asus NUC 14 Pro+ models on Galaxus, the price difference could come from different suppliers on the platform or from multiple suppliers. These are often minor variations such as packaging or delivery conditions, which are not always visible in the product description.

I'm not completely sure, but I had an SSD (WD Black SN850P with Heatsink for PS5) and it didn't fit, I had to remove the heatsink. So I would assume that the 990 Pro with heatsink won't fit either.

Exactly, only SSD and RAM. And you also need a power cable, I think it's called a "c5 power cable", it's a standard one that you often have lying around.