2x M.2 SATA or 1x M.2 NVMe Riser Card in Twin-Pro (for 4 modules)
1U Riser card w/ 2x M.2 SATA or 1x M.2 NVMe Controller - 2x 2x M.2 Port ( 2x M.2 SATA 2280 or 1x M.2 NVMe 2280) Internal Ports - Add-on-Module Slot
2U WIO Riser Cards: w/ 2x PCIe3.0 x16 Slots
2U Riser card w/ 2x PCI-Ex16 3.0 Slots Controller - 2x PCI-Ex16 3.0 Internal Ports