Ventana and Newport boards use a dual function connector which contains both SIM and microSD card slots in the one connector. The microSD card offers the following support: Fully compliant with SD command/response sets and Physical Layer as defined in the SD Memory Card Specifications, v3.0 including high-capacity SDHC cards up to 32 GB and SDXC cards up to 2TB. The SIM is a full size SIM and is mapped to one of the Mini-PCIe connectors for cellular modem support. Arrangement: * SIM Card goes on the top slot of the connector * MicroSD is on the side edge of the connector See picture for example of hot to insert the cards.