Prebuilt - Getting around a PCIe Slot 35W limit -

pcie 4 0 gpu in 3 0 slot   Dan pcie slot bracket

Yes, you can use a PCIe graphics card in a PCIe slot PCIe slots are backward compatible with PCIe cards, meaning they can still work together

Yep PCIe cards will work on PCIe slots #1 mongoloid  3 slots, Slot 3, 5 & 6 should be PCIe 4x4 NVMe I bought a Samsung GPU will use up most or all of the CPU supplied lanes J

fruit mania golden nights slot You can insert a PCIe SSD card into a motherboard with PCIe slots, but this SSD won't be able to make full use of the higher bandwidth  It's not a question of efficiency ( whether or not it's justifiable to use expensive card designed for 16x PCIe in 4x slot of PCIe