
ttyUSB0 (if #0): QCDM/DIAG port ttyUSB1 (if #1): GPS data port ttyUSB2 (if #2): AT primary port ttyUSB3 (if #3): AT secondary port
ttyUSB0 (if #0): QCDM/DIAG port ttyUSB1 (if #1): GPS data port ttyUSB2 (if #2): AT primary port ttyUSB3 (if #3): AT secondary port