I bought a used HP xw4600 system (being shipped) that has what I believe is a Nvidia Quadro FX 580 PCIe graphics card in it (seller didn't know specific model, but it came with the original system). Inside the manual for the xw4600 http://h18000.www1.hp.com/products/quickspecs/12792_na/12792_na.PDF the specs for this graphics card indicate:
* 2 DisplayPort, 1 Dual-Link DVI-I.
* Two DisplayPort outputs drive two digital displays up to 2560 x 1600
* One dual-link DVI-I output drives one digital display at resolutions up to 2560 x 1600 @ 60Hz or one analog display at resolutions up to 2048 x 1536 @ 85Hz
NOTE: This card supports up to two displays."
I need to run two monitors. One can be connected to the DVI-I, with a DVI to HDMI cable, but the second monitor, which has both an HDMI and a VGA input, has to rely on one of the DisplayPort connectors. I thought that I could use a male-DisplayPort to male-HDMI cable to do this, but I'm running into some confusion about the DisplayPort interface.
In general, I thought it is possible to use the cable above if you go from a DisplayPort OUTPUT to an HDMI INPUT (the reverse does not work), but Wiki says this about DisplayPort:
"The DisplayPort signal is not compatible with DVI or HDMI. However, Dual-Mode DisplayPorts [or DP++ ] are designed to transmit a single-link DVI or HDMI 1.2/1.4 protocol across the interface through the use of an external passive adapter that selects the desired signal and converts the electrical signaling from LVDS to TMDS. Analog VGA and dual-link DVI require powered active adapters to convert the protocol and signal levels, and do not rely on Dual-Mode. VGA adapters are powered by the DisplayPort connector, while dual-link DVI adapters may rely on an external power source." http://en.wikipedia.org/wiki/DisplayPort
The above suggests that if you do not have a "Dual-Mode DisplayPort" you won't be able to use the male-HDMI connector cable. I know there's an active converter box of some kind for DisplayPort, but I'm not sure that's the only way I can go. I don't want to waste time and money ordering the wrong cable. I can't find any specs on the graphics card that indicate if it has "Dual-Mode DisplayPorts."
Anyone have experience with this?
Edited by peterk312, 31 January 2014 - 06:26 AM.