StarTech.com 6in (15cm) DisplayPort to Mini DisplayPort Cable - 4K x 2K UHD Video - DisplayPort Male to Mini DisplayPort Female Adapter Cable - DP to mDP 1.2 Monitor Extension Cable (DP2MDPMF6IN), Black

The DP2MDPMF6IN DisplayPort to Mini DisplayPort Adapter turns a mini DisplayPort (male) connector into a regular DisplayPort (male) connector, making it easy to connect a mini DisplayPort-equipped monitor to a laptop that only provides a standard DisplayPort output (e.g. Apple, Toshiba etc.).