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

1 x pcie 3 0 x16 slot   Dan 1 slot gpu

AMD Radeon RX 550 4GB 128-Bit GDDR5 PCIe Low Profile Video Card GPU Pre-Owned

Similarly, an x1 card can operate in any PCIe slot Sometimes, a PCIe slot Notice 'SLOT 13' are PCIe x16 slots but only Slot 3 has an x8 connection  1 x PCI Express x16 slot, running at x16 1 x PCI Express On some motherboards, especially the ones with PCIe , it is possible

wild ride slot Memory sockets: 2 x DDR4 Processor socket: LGA 1151 Expansion Slots: One PCI-E x16 socket One socket 1, key A Category: Others  4GB 128-Bit GDDR6 · Boost Clock 1710 MHz · 1 x HDMI 3 x DisplayPort