StarTech.com DP2MDPMF6IN 6in DisplayPort to Mini DisplayPort Video Cable Adapter - M/F
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.).