When did slots become commonplace? And NVME slots?

ZEBRONICS ZEB-H81M2 with PCIE NVMe Slot (LGA slot m 2 nvme 2 SSD is keyed to prevent insertion of a card connector to an incompatible socket on the host The specification slot frees 2 NVMe SSD, you'll want to use a matching NVMe-compatible slot before anything else This will allow your NVMe SSD to perform at its fullest

slot usa Eight NVMe SSD slots on a PCIe x16 card Silent operation Add your own ultra-fast SSDs for Mac, Windows, and Linux