hdmi to display port

USB Docking Stations UD-3900
1

hi,

Got the plugable U-3900 want to use both hdmi and dvi to two monitors, the dvi port works; using hdmi to display port for second monitor ? It does not see second monitor. Laptop is a Dell E7450. Should this work or do I have use the hdmi port on the laptop to the monitor?

Mark

2

Hi Mark,

Thanks for posting. I’d be happy to help with your docking station!

The cable you are using with a HDMI connector on one end and the DisplayPort connector on the other is most likely a passive cable. This cable will only allow the conversion of a DisplayPort output to a HDMI input, not the other way around as you are trying to do.

Does your monitor with the DisplayPort input also have a DVI input? If that is the case you could use a HDMI to DVI cable as those cables work in both directions.

Let us know if that information helps when you have a moment and we’ll go from there.

Thank you,

Bob
Plugable Technologies
www.plugable.com/support

3

Hi Bob,

I may have the same/similar issue. I have two old monitors that one take DVI or VGA input, so I bought an adaptor to convert HDMI to VGA. Using the DVI port on the U-3900 works fine on both monitors but when using the HDMI/VGA connection the screen is blank. The computer recognises the display as it is visible on the control panel–>appearance–>display–> ‘screen resolution’ set-up - in actual fact it recognises 3 screens though I only have 2 - but there is no picture. I can’t see anything in the HDMI/VGA connector specification that suggests its passive (see http://www.kenable.co.uk/product_info…) but could that be the issue? Do I need a better connector or a new monitor to get this to work?

Thanks in anticipation

Ian

4

Hi Ian,

If I am not mistaken, this post –> http://support.plugable.com/plugable/… is also you, correct?

If that is the case we’ll continue in that new thread, as your issue seems different than the original post in this topic.

Thanks,

Bob