Remove the air baffle by lifting the baffle up and out of the storage server.
See Remove a Fan Module.
Press each latch, and then pull out to disengage the cable from each connector. See also Remove a PCIe Card.
Press each latch, and then pull out to disengage the cable from each connector.
Carefully remove the NVMe cable bundles from the center and left-side chassis mid-wall. Be careful not to snag the cables on the server components.