Manual
Page 31
... to check the alignment of the notch, and press the card into the slot. 3. There should be one open slot available. 2. If you purchased the GIGABYTE WWAN 3G Module separately you . 3.7 WWAN 3G Connection (Only Optional for i1520N) The i1520, depending on the card.
... to check the alignment of the notch, and press the card into the slot. 3. There should be one open slot available. 2. If you purchased the GIGABYTE WWAN 3G Module separately you . 3.7 WWAN 3G Connection (Only Optional for i1520N) The i1520, depending on the card.