Hello I am using D-link DIR 859 A3 F.W. 1.01SG. I'm wondering how could I limit the internet speed of a connected device. I could only see the QoS engine and put the device on medium priority. I have a 15 mbps connection and I want to limit the device to 1 mbps only. Is it possible? I don't know much about this kind of stuffs so any help would be much appreciated.