All you need to know is that the Component Video output stays live even when using the HDMI output. You can test this in a variety of ways without actually ordering & receiving the 25-foot set of Component Video cables. Take a normal Composite Video cable (yellow RCA) and run it to a spare monitor's Composite Video input. You will just be missing the color information but it will determine if there is output. Connect the HDMI, and if you are seeing both the HDMI and the same picture as you saw before you connected the HDMI, you have an affirmitive answer. If the picture on the non-HDMI (spare) monitor goes away when you connect the HDMI then you have a negative answer (i.e., don't order the 25-foot set of Component Video cables). No spare monitor with which to perform this test? No problem, throw an AC Voltmeter on the yellow RCA cable, observe the AC voltage in the working configuration (no HDMI connected), it should be around 1Vpp, connect the HDMI, watch for any change, no change and you're okay, but if the voltage goes to zero (or nearabouts) then there's your negative answer again.