Overview to different PCI cards and slot types and ways to combine

What are the top uses of PCIe x1 Slots? pcie slot height slots with maybe half-height cards? Do you know of any such thing? Edit: Maybe something like this: RC27332X16C15 2U 2-slot PCIE X16 pcie slot bracket PCIe Gen3 x4 PCIe slot to SFF-8644 Passive Adapter Quick View Part #:, PCI-AD The adapter comes with an adjustable 15mm tool-less fixture and full-height

pcie slot function Many 1U and 2U cases servers mount full-size PCIe cards horizontally using a PCIe riser card Find a server with a case that has enough room