Which slot should I use for my SSD?

Which slot should I use for my SSD? nvme slot types NVMe cards, as you probably are aware, require an M key slot even through they're electrically similar to E key, save for the extra 2 lanes nvme slot 2 slots for both types , and even if it does, you don't want to waste money on a

nvme slot 2 M key slots have five pins and support SATA, PCIe, and NVMe protocols They are typically used for high-speed SSDs and other high-performance peripherals

nvme pcie 40 in 30 slot nvme list, Lists all the NVMe SSDs attached: name, serial number, size, LBA format, and serial ; nvme id-ctrl, Discover information about NVMe controller and 2 slots With a PCIe NVMe + SATA dual-mode design, users can build a RAID storage system with two NVMe SSDs or a SATA Mode SSD + a general SATA SSD