Hello [NAME] , you need to install Dell On-Screen Display Application to control the brightness bar, change the input source, and turn the screen on or off through the OSD button.
I was given an OptiPlex 7470 and have a couple of questions 1) This is the version that has two HDMI ports and one is labeled as the "HDMI in". I have also found the OSD button that is supposed to switch the machine to be a secondary screen. This button doesn't change anything. If I press and hold it then the screen will turn off (while still playing audio) but will not switch to be a monitor for another computer. How do I get it to work as a secondary screen? I use it as a computer for some items but I also have a work laptop (Dell) that I could really use the extra screen with. [IMAGE]HDMI input on the left   From the searching I've done it sounds like maybe it is a graphics card issue? I don't understand what is needed though. Here is what the computer says it is connected to. [IMAGE]   2) The one given to me also has a USB 3.0 (male) coming off the base on the back. What is this for? [IMAGE]   Over the last two months, I have done extensive searching for the solutions/answers to my questions and nothing I have found applies to the issues I am running into. Please help!
Optiplex 7470 HDMI Input and USB Output Questions