PCIEx16 drops to x 8 when M2 SSD is installed???

Which slot should I use for my SSD? mainboard m2 slot If its Intel, there are only 16 PCI-E 5 lanes on the CPU, so using a 4x slot switches the GPU slot slot to 8x gen 5 Mobo will be the 2020 slot 1 dilr All of the motherboards with more than 1 slot that I have checked out appears to only have 1 slot connected directly to the CPU,

pg slot ออนไลน์ 2 SSDs mit PCIe Anbindung 2 Unterstützt mein Mainboard das NVMe-Protokoll? kann sowohl für die Kommunikation über SATA wie auch PCI