There could be several reasons why the DisplayPort to HDMI cable is not connecting to the Dell P2815Q monitor. One possibility is that the cable is not compatible with the monitor or the devices being connected. It's also possible that the cable is damaged or faulty. Additionally, there may be an issue with the ports on either the monitor or the device. It's recommended to try using a different cable or connecting to a different device to troubleshoot the problem further. **

The better connection depends on the specific devices being used and the desired features. In general, if both the source and the display support DisplayPort, using a DisplayPort to DisplayPort connection will provide the best performance and compatibility. However, if one of the devices only supports HDMI, then using a DisplayPort to HDMI connection would be necessary. It's important to consider the specific requirements and capabilities of the devices being connected to determine which connection is better for the given situation. **

The choice between HDMI, DisplayPort, and Mini DisplayPort depends on your specific needs. HDMI is the most common and widely supported option, making it great for connecting to TVs and monitors. DisplayPort offers higher bandwidth and is better suited for high-resolution displays and multiple monitor setups. Mini DisplayPort is a smaller version of DisplayPort and is commonly found on Apple devices. Ultimately, the best option for you will depend on your specific requirements and the devices you are connecting. **

The Dell P2213 monitor does not work with DisplayPort because it does not have a DisplayPort input. The monitor is equipped with VGA, DVI, and DisplayPort outputs, but it is not compatible with DisplayPort input. Therefore, in order to use the Dell P2213 monitor, you would need to connect it using either the VGA or DVI input options. **

To switch from HDMI to DisplayPort, you will need to disconnect the HDMI cable from your device and connect a DisplayPort cable instead. If your device does not have a DisplayPort input, you may need to use an adapter to convert the HDMI output to a DisplayPort input. Once the cable or adapter is connected, you may need to select the DisplayPort input on your device by using the input/source button on your monitor or TV remote. After selecting the DisplayPort input, your device should now be connected and ready to use with the DisplayPort connection. **

The HDMI adapter to DisplayPort should work as long as it is compatible with the devices being connected. However, there may be instances where the adapter does not work due to compatibility issues or a faulty adapter. It's important to ensure that the adapter is compatible with the specific devices and that all connections are secure. If the adapter still does not work, it may be necessary to try a different adapter or seek technical support. **

To convert DisplayPort to HDMI 2.3, you will need an active adapter or converter that specifically supports the conversion from DisplayPort to HDMI 2.3. Look for an adapter that is labeled as "DisplayPort to HDMI 2.3" to ensure compatibility with the latest HDMI standard. Once you have the appropriate adapter, simply connect the DisplayPort end to your source device and the HDMI end to your display device, and you should be able to transmit audio and video signals from your DisplayPort device to an HDMI 2.3 display. **

To switch from DisplayPort to HDMI, you will need to disconnect the DisplayPort cable from your device and then connect the HDMI cable. If you are using a computer, you may need to go into your display settings to select the HDMI input. On a TV or monitor, you will need to use the input/source button on the remote or the display itself to switch to the HDMI input. Once the HDMI cable is connected and the input is selected, your device should start displaying through the HDMI connection. **