“The BeagleCore is fully compatible with the BeagleBone Black, you can transfer your prototype hardware and software from the BeagleBone to the BeagleCore and it will still work. The design philosophy for the BCM1 is to match the core functions of the BeagleBone and allow you to create your own baseboard with just the connectors you need. Maybe you don’t need the HDMI socket, but you do need more USB ports, it’s your call.”
http://m.rapidonline.com/electronic-components/beaglecore-bcm1-computer-module-1ghz-512mb-ddr3-4gb-flash-75-0594