Hello... Windows 7... Windows XP... ATI and Nvidia cards/drivers both support Extended and Clone display modes... do a search on theses modes to further explain which one is right for you... but in short... Extended means you can extend the windows desktop either vertically or horizontally... your mouse pointer will move off one screen and continue to the next screen. Clone is just a duplicate screen on both monitors, at each own monitors resolution.
You need to go into the Control Panels of either Windows and/or the ATI/Nvidia software to set these up... You need to "Identify you Monitors"... and set resolutions for each one... after that you can plug and play/turn on off monitors at will... and change display modes at will...
Basically the VGA connector is an analog signal only... DVI connectors are digital and can have analog signal pins also... HDMI is digital and audio signals... there are variants to DVI and HDMI connectors... do a WIKI search for both for further explaination.
I'm using an older model 8800 Nvidia card with dual DVI-I connectors... and use a DVI-I to HDMI 1.4a adapter to connect to my LCD TV... I can switch my TV input to HDMI and both Windows 7 and XP will imediately see my TV... as a monitor capable of 1080P... and display on it... and allowing me to switch to extended or clone mode on the fly... and thus having a computer monitor and TV both running at 1080p with this card... 1920x1080.
I would suggest using a simple HDMI to DVI adapter plug in your case... I have found very good deals on EBAY for all types of plugs... and I would suggest that any basic video card you get should be dual DVI outputs... or DVI and HDMI at best, if you want to also send an audio signal out to a monitor or TV... Digital signals are the best way to go these days... get away from any use of VGA connectors, because newer monitors and video cards, will have to use more electronics to change a digital signal to analog, degrading or converting the original signal... after all... your computer data is Digital.
My searches for the the Radeon HD 5450 shows a VGA/DVI/HDMI connectors...
"The Radeon HD 5450 keeps Eyefinity support on select models, so if this is the feature you are looking for on a budget card, make sure your selected brand and model can support it. Like its higher-end variants in the 5000 series, you can hook up to three high resolution monitors (up to 2560x1600) to this board."
My searches for the ACER P216H show both VGA and DVI inputs...
Seems to me you have the right main parts to do Extended and Clone modes in Windows... you just need a HDMI to DVI Adapter... manually set your monitor to DVI input... and do an " Identify Monitor" software setup.
post edited by IronSound - 2011/01/14 09:08:47