What are PCIe x1 Slots Used For?

Using LSI 2308 in PCIE x1 mode, what will I lose? pcie 1x slot Supports AMD Socket AM5 Ryzen™ 9000, 8000 and 7000 Series Processors · 8+2+1 Power Phase, · 2 x DDR5 DIMMs · 2 PCIe x16, 1 PCIe x1, 1 Key E for pcie training error slot 1 Design Ready for PCI Express 1* PCIe x4 & 3* PCIe Unlock the latch of the PCIe slot easily when remove the graphics card in the PCIe slot

pcie gen 4 in gen 3 slot Slot power · x1 cards are limited to A at +12 V and 10 W combined · x4 and wider cards are limited to A at +12 V and 25 W combined · A full-