SSD NAS WD Red SN700 4TB M.2 2280-D5-M PCIe Gen3 x4 NVMe, Read/Write:
8 Port 6Gbps SATA PCIe Card Controller - SATA Controller Cards | Add-on Cards & Peripherals | StarTech.com Europe
Amazon.com: LTERIVER PCIE to 2-Ports Serial ATA/SATA 3.0 Host Controller Card, Plug and Play on Windows OS, MAC OS and Linux Kernel PCs, 2X 6Gbps Max SATA 3.0 None Raid Ports-Support AHCI
Understanding PCIe Upgrade Cards and NAS - YouTube
Mini-NAS based on the NanoPi M4 and its SATA (PCIe) hat: A cheap, low-power, and low-profile NAS solution for home users (description and tutorial in the comments) : r/MiniPCs
PCI Express (PCIe) Expander
QNAP NAS Budget Wi-Fi 6 PCIe Card Test - YouTube
QM2-2P2G2T | 2 x PCIe Gen3 M.2 NVMe SSD & 2 x 2.5GbE port expansion card to enhance performance | For PC/Server | QNAP (Middle East)
QNAP Launches Single-port 2.5GbE PCIe Card for NAS and PC | QNAP
QDA-U2MP | Use two M.2 PCIe NVMe SSD in a U.2 PCIe NVMe SSD drive bay for PC and NAS | QNAP (Middle East)
PCI Express kontroler Axagon PCEM2-ND PCIe 3.0x8 na Dual M.2 NVMe SSD adapter 30-110mm Standard i Low Profile | Svijet-medija.hr