Sometimes you might be having a laptop that uses a DP cable and wants to connect it to an external display that uses the HDMI standard. Luckily, it is easy to connect them both. While you cannot use a DP to DP cable for that, there is a workaround for this problem. Newer graphics cards that support DP technology are backwards compatible with older VGA and HDMI ports. So, you can simply use a DP to HDMI cable to connect the laptop to an HDMI display.