Amazon.com: Kingwin SSD Mounting Bracket for PCI, 2 x 2.5 Inch SSD to PCI Internal Hard Drive Mounting Kit. Convert Any 2 x 2.5” SSD Into One PCI Slot, Mounting Screws Included,
Plextor M6e SSD review: It's faster than a SATA drive, and not much more expensive | PCWorld
M.2 NVMe SSD to PCIe x4 Expansion Slot - Hard Drive Racks - HDD Mobile Racks & Backplanes | StarTech.com Europe
Sonnet M.2 2x4 Low-profile PCIe Card – SONNETTECH
What is a PCIe SSD?
Amazon.com: 2.5-Inch U.2 Nvme Drive to PCI Express X16 Slot Card or SATA III SSD/HDD PCI Mount : Electronics
Amazon.com: Sedna PCI Express (PCIe) SATA III (6G) SSD Adapter with 1 SATA III Port (with Built in Power Circuit, no Need SATA Power Connector, Best for Mac), SSD not Included :
Amazon.com: EZDIY-FAB NVME PCIe 4.0 Adapter, M.2 NVME SSD to PCI Express Adapter with Heat Sink, Only Support PCIe x16 Slot,Support M.2 SSD 2230 2242 2260 2280 : Electronics