The main component of the master node is an Industrial board that takes care of the management of all the data communication buses. In order to increase the number of the communication bus an integrated circuit has been mounted on the board, the LAN9514 is a high-performance USB 2.0 Hi-Speed ​​hub with a 10/100 Ethernet controller, and is able to manage 4 ports USB that can be used for connecting expansion devices: such as pen drives, keyboards, mice, printers, wireless communication devices and more; while the Ethernet bus is essentially used for data communication over the network (cloud).
The LAN9514 hub also provides over 30 programmable features, including: PortMap (also referred to as port remapping) capable of providing flexible port mapping and enabling and disabling sequences; PortSwap that allows the programmability of the pins of the USB differential pair; PHYBoost which allows you to enable four different power levels on each USB port.