This cable enables you to connect DisplayPort devices e.g. a monitor to your PC. The DisplayPort is standardized universal connecting standard by VESA for the transfer of video and audiosignal. It can be applied for monitors, TV to computer, DVD-player and similar devices.
Slim plug
Thanks to the missing latch, the plugs are a bit slimmer than standard DisplayPort plugs, so several ports can be used simultaneously. In addition, the plugs can be removed more easily from hard-to-reach DisplayPort ports, e.g. on the rear side of a monitor.