NVIDIA DGX A100 Service Manual
5. Install the assembled module on the motherboard by inserting the riser card in its slot.
6. Close the motherboard tray lid and then install the motherboard tray.
Refer to the instructions in the section Replacing the Motherboard Tray.
7. Connect all the cables to the motherboard tray.
8. Re-install the DGX OS server software.
See the DGX A100 User Guide for detailed instructions.
11.3. Replacing the M.2 NVMe Riser Assembly 49