HDMI to DisplayPort Adapter - 4K 30Hz

This is an active video signal converter.  

A passive video signal converter changes the type of connection that is being used but does not change the signal that passes through the converter. Because the video signal is not modified, passive converters tend to be smaller, simpler, and less expensive than active video signal converters. Examples of passive converters include DVI-I to VGA, HDMI to DVI, and DisplayPort to Mini-DisplayPort converters.

An active video signal converter modifies both the type of connection that is being used and the signal that passes through the converter. Because this type of conversion can be complex, active converters tend to be larger than passive video signal converters and sometimes require additional power. Examples of active converters include DVI-D to VGA, HDMI to DisplayPort, and VGA to HDMI converters.

For more information about passive and active DisplayPort video signal converters, refer to the following FAQ: https://www.startech.com/faq/DisplayPort_Converter_DP_Multi_Mode.

For more information about which type of video signal converter you should use when you convert video signals with an MST hub, refer to the following FAQ: https://www.startech.com/faq/mst_hubs_passive_vs_active_adapters.

To output 4K to a DisplayPort display at 30Hz, your monitor must support the resolution and refresh rate. If your monitor also supports 4K at 60Hz (DP 1.2 or higher), you may also need to set the monitor to work at 30Hz. 

To resolve this issue, use the buttons on your monitor to change the DisplayPort settings to DP1.1. For more information about how to change your monitor settings, refer to the website of the manufacturer of your monitor.