Provides the power connectors, as well as the connections to the SoC for the basic I/O (UART, display, 2-channel audio, USB, Ethernet, etc.). Has mounting connectors for mSATA, SDMMC, and on-board EMMC storage, as well as the wireless communication modules for Wi-Fi, Bluetooth, and GPS. Also provides the large multi-pin connectors and mounts for both the VCM and EBB.