PCIe VS : What are the differences and similarities?

PCIe Gen : 210 mm, 175 mm, 270 mm, 385 mm, 440 mm PCIe standard PCIe Gen PCIe Gen 3 slots with extra feet With horizontal SFF GPU

Dual Channel DDR5：4*DIMMs XMP Memory Module Support; Next Generation Storage：2*PCIe x4 Connectors; EZ-Latch：PCIe Slot with Quick Release

pcie slot meaning Supports up to 3 slots GPU at vertical mounting position to showcase in A3-mATX Includes a PCIe riser cable for seamless connectivity A3-mATX Vertical GPU

pcie gpu slot Yes, it'll be perfectly compatible with gen PCIE slot