Here is the information of the main device, you have some useful pieces of information:

• Model - This is the device itself and the version of the device e.g BLN2(device) - ODB(type)
• Input - The power in put required for the device 12/24v, If the device type has a P ODPB then it can also be powered over POE
• Serial number - This can be used for RMA's and to find the mac address of the Device

This is where the cables will be, they come out of the epoxy plastic and are colour coordinated:

Speaker

Speaker of the device used for audible transactions on the device including authentication success, authentication failed, authentication denied.