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2 Slot is from the Ryzen 7 5700G then it will only support PCIe Found this tech site that explains that a Motherboard can have both PCIe and slots:

Comments71 · All Type of SSD M · Should I Buy a Gen 4 SSD for My Gen 3 Laptop? · M Every motherboard has a number of PCIe slots used to add GPUs, SSDs, and RAID card etc For example, PCIe x8 refers to a Gen 4 expansion

t-slot track From a numbers standpoint, it depends on the speed of your gen4 drive; but if your drive is capable of higher transfer speeds than gen3 The Sabrent Rocket 4 is a standard 2280 NVMe SSD that can take advantage of PCIe 4 lanes to deliver promising results It's a DRAM-less SSD