I have a new Dell OptiPlex 3050 (small form factor) with an Intel 630 Video Adapter. it has 1 HDMI port and 1 DisplayPort (DP). Each monitor has 1 VGA port and 1 DP port. I can successfully connect 1 monitor to the PC using a VGA to DP cable. However, when I try to connect the second monitor to the PC using a DP to HDMI cable, the computer does not recognize the monitor at all and the Monitor says "No DP cable''.
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Updated information: It is the Micro form factor, with i5-7500T 207 GHZ processor and 8MB RAM. the Video Adapter is an Intel HD Graphics 630.
A computer HDMI out port cannot upconvert to a monitor DP in port unless you purchase an active converter. The cable you bought is designed to do the opposite =
Computer DP out port --> DP to HDMI cable --> Monitor HDMI in port
Connect in this way =
Optiplex 3050 DP out port ---> E2416H DP to DP cable --> E2416H #1 DP in port
Optiplex 3050 HDMI out port --> HDMI to VGA cable --> E2416H #2 VGA in port