Nvidia DGX-2 System Service Manual page 29

M.2 Boot Drive Riser Assembly Replacement
5. Install the assembled module on the motherboard by inserting the the riser card in its slot.
6. Install the motherboard tray lid and then install the motherboard tray.
Refer to the instructions in the section Installing the Motherboard Tray.
7. Connect all the cables to the motherboard tray.
DGX-2 System DU-09224-001 _v09 | 23