The display is Displayport interface, but the input device is indeed the HDMI interface. This problem is better like having a Displayport cable, which is useless. If the current technology is not so developed, it may be a joke. Now on the market, there are many Displayport cable, but the interface of the device is also uneven, so you can only use HDMI to DP interface.
Only the computer is tdislayport interface, and display is the hdmi interface, so you can buy displayport to hdmi adapter cable, this is not interchangeable. Your monitor should have other interfaces besides the display interface, such as VGA interface and DVI interface, etc. You can buy HDMI to DVI cable or HDMI to VGA Cable. My computer TV has HDMI interface, so I can buy a HDMI Cable directly on the official website of Starte.The quality of HDMI cable is pretty good, watching the movie is very clear.
No matter it is DP cable or DP interface, there are still some ways to solve it. The main market is full of different adapters. Some people will ask this question, my SLR is the HDMI interface, and the computer display (DELLU2412M) is the DP interface. I want to transfer the real-time image of the SLR to the display on the computer display (previously SLR HDMI to TV screen HDMI is feasible) Is there a possibility? The computer plays the movie. From the DP interface of the monitor, can it be transmitted as a transmission signal to the HDMI terminal of the TV? ? What is the significance of the DP interface design of this DELL display? Can only be DPTODP? Can only be the receiving end?
In theory, DP and HDMI, DVI, VGA can be switched to each other (requires adapter, there is a conversion circuit inside). In fact, so far, only DP can be transferred to HDMI, DVI, VGA, and can not be reversed. So:
1. Your first option is not feasible.
2. Some DP interfaces are only used for DP signal video input, and can't output any signal.
Its design significance is also very clear, more and more graphics cards now have DP output, for those equipped.