10Gtek product info for D.
Requires the motherboard PCIe x16 slot to support splitting to x4 + x4 + x4 + x4. If the PCIe x16 slot only supports splitting to x8 + x4 + x4, only three disks can be recognized. If the PCIe x16 slot only supports splitting to x8 + x8, only two disks will be recognized.