NVMe PCIe SSD Adapter Installation and Speed Test

First of all, I know that a PCIe 4 SSD NVMe will be running at gen 3 speeds and bottlenecked by the PCIe 3 slot But I'm wondering if there are

SSDs support both NVMe protocol using PCIe interface and AHCI using SATA offers connectorized modules supporting NVMe and SATA

2x2 lottery SSD option I then purchased a Samsung 980 Pro 1 TB SSD and installed it in the second slot It works and now appears as

2x m2 ssd slot nvme pcie gen4 Storage: 512GB PCIe Gen4 NVMe SSD RAM: Up to 32GB DDR5 ; Storage: up to 2TB of PCIe Gen 4 SSD (2x SSD