REACTIVO design is clear and easy to navigate around. DC power connector and Wi-Fi connection button is on the backside. Status LEDs are also located here.
On the front side, you have big green connector, or SPI output (it is basically LED signal output). Also, 2 small black connectors for external triggers/sensors (digital or analog).
On the side, you can find an Micro SD-Card slot. One card is included in your kit.