I used a USB cable (which is also can be used for connecting the printer to PC) to connect the LCD monitor to PC but nothing happened and those ports did not worked. There is also a power input in the LCD also. Do this power source has any thing to do with USB ports to work? and sorry, its a Dell LCD monitor not HP.Usually those act like a USB hub. As we don't know anything about this monitor apart from its brand, you'd likely need some sort of USB cable to connect it to your PC to use the USB ports on the monitor itself.
The monitor needs to be connected to power for anything to workI used a USB cable (which is also can be used for connecting the printer to PC) to connect the LCD monitor to PC but nothing happened and those ports did not worked. There is also a power input in the LCD also. Do this power source has any thing to do with USB ports to work? and sorry, its a Dell LCD monitor not HP.
LCD model number is Dell 1708FPb.Give us the exact model number and we can discover how it connects.