NVIDIA H100 PCIe GPU

It'll fit in any PCIe x16 slot physically I imagine your card is likely a 3-4 slot cooler Make sure you've removed the rear brackets so that

PCIe compatibility and performance generates a LOT of confusion In Explaining PCIe Slots

pcie slot configuration gen1 gen2 gen3 2 GPU 4 GPU 8 GPU · High Density Server Compute, Storage, and 2 Connector; EZ-Latch：PCIe x16 Slot with Quick Release Design; Fast Networks：GbE LAN

pcie 4 in pcie 3 slot ssd PCIe slots are used to connect graphics cards, sound cards, other interface cards and some