The DisplayPort to HDMI adapter lets you connect an HDMI video display to a DisplayPort video source (e.g.DisplayPort video cards, etc.), eliminating the expense of having to upgrade your display for DisplayPort compatibility.
This is a passive adapter. While DisplayPort connectors are capable of passing an HDMI signal, DisplayPort and HDMI signals are basically different and not compatible with each other. This adapter does not actively convert a DisplayPort signal into an HDMI signal. In order for this adapter to function properly, you must have a DisplayPort source device capable of producing and passing out an HDMI signal through the DisplayPort jack.
Laptops supporting DisplayPort (chronologically):
Alienware M11x, M15x and M17x.
Dell Adamo 13, Studio XPS 13 and Studio XPS 16, Latitude E6400, E6410, E6500, E6510, Z600 and Precision M2400, M4400, M4500, M6400, M6500, M6500 Covet.
Lenovo ThinkPad X301, T400s, T410s, T410, R500, T500, T510, W500, W510, W700, W700ds, W701, W701ds. (X200s, X200, X200 Tablet, X201s, X201, X201 Tablet support DisplayPort via the optional X200 Dockingstation.)
HP ProBook 5310m, 5320m, 6440b, 6445b, 6450b, 6455b, 6540b, 6545b, 6550b, 6555b, EliteBook 2540p, 8440p, 8440w, 8540p, 8540w, 8740w and Thin-Client t5740, t5745.
Fujitsu LifeBook S710, E780 and Celsius H700.
Acer Aspire 8930, 8938, 8940 and 8942.
Asus M60J, B43, B53.