Does anyone know about the bandwidth used/allowed when multiple usb devices are connected to one computer. I have been having trouble with a USB isdn modem/box for about 2 months, today i noticed a usb icon appear on my task bar and click it before it dissappeared. I was saying that i was using too much bandwidth. I have the asus A7N8X mobo c/w 4 USB ports (i think 2 sets of 2 and a self powered usb hub, i have 4 appliances connected and a digital camera when downloading photos.I have now configured it so th ISDN modem and the webcam are not in the same 'bank'. This seems to have solve the problem for now.So if anyone can shed any light on the bandwidth problem it would be much appreciated. How much USB appliances could i have connected to the one PC. Cheers in advance.