The AOC-CX766003N-SQ0 is
a PCIe 5.0 x16 400Gb adapter. On the SSG-221E-DN2R24R, Slot 3
and Slot 4 are only PCIe 5.0 x8, so the card will not work correctly
there.
We
would recommend installing it in Slot 1 or Slot 2 (PCIe 5.0 x16) for
correct operation.<o:p></o:p>