1U RHS GPU Server riser card: with 2 active PCIe3.0 x8 slots
2x M.2 SATA or 1x M.2 NVMe Riser Card in Big-Twin (for 2 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