1. Part① is only for DDR3L 1.35V RAM slot.
2. Part② is SIM card slot.
3. Part③ is full-length mini-pcie slot, only for mSATA SSD.
4. Part④ is half-length mini-pcie slot, only for WiFi (/BT).
5. Part⑤ is full-length mini-pcie slot, only for 3G/4G module.
Pls Note:
1. We don't provide SIM card and 3G/4G module.
2. This model can support WiFi and 3G/4G at the same time.