What B550 Motherboard support 2x pcie x4 nvme slots?

2x m 2 ssd slot nvme pcie gen4   Dan 2x m2 ssd slot nvme pcie gen4

SSDs You will be impressed with the results for the GEN3 PCIe QUAD NVMe

2x 12GB SO-DIMM DDR5-4800 RAM Memory Slot, Two DDR5 SO-DIMM slots, dual-channel capable Up to 32GB DDR5-4800 ; 512GB SSD 2242 PCIe ×4 NVMe Storage 2 slot before anything else This will allow your NVMe SSD to perform at its fullest (within the limits of your motherboard- a SSD will be

w slot A Samsung SSD that can use up to four PCIe lanes The numerical naming convention is used to define the size and functionality of the card, here is how:  Storage Capacity, 512GB ; Storage Type, PCIe NVMe SSD ; Extra Slot, Yes ; Storage Upgrade, Additional SSDs can be added ; Storage Support, 2x slots