Hi, we have 3 pieces of Nvidia Jetson Xavier NX (900-83668-0000-000) with problems. These are the following problems
1.hang on the flashing screen (s/n ending: 3487)
2.error on flash screen (s/n ending: 3465)
3.could not detect card (s/n ending: 3483)
May I know how can we proceed to return or exchange for new pieces.