I have a Dell U2410 monitor that is connected to my desktop via HDMI which in turn is connected to my Dell speaker bar. However, there is an annoying common issue with the monitor that it doesn't go to sleep if it's using the HDMI input. I'd rather not use DVI as I'd like to run both audio and video over the same cable. I was wondering if it's possible to use a Displayport to HDMI cable. As far as I know this cable is usually used from a Displayport source to a HDMI screen, but not sure if it can be used vice-versa. Does anyone know if this would work?