How to monitor bandwidth use of each device on dlink 2750u

The method which i saw online is to install custom firmware on your router and to be precise install DD-WRT or TomatoUSB firmware. But unfortunately DD-WRT or TomatoUSB doesnt support D-link 2750u routers. So is there any another way or firmware (supported by D-link 2750u) to monitor the bandwidth usage by each device coected on network.