I picked up a May 2010 MacBook Pro after waiting for the promise of HDMI output with Sound. This display converter works. That is about the best compliment for an item to uphold : does it work, yes. My only wish was it would be a single unit vice a two piece adaptor but that does add functional use of it since if you need a DVI converter you have it.
Not compatible with DVI-I. The product does not work for DVI-I plugs, common to many flat screen TVs built in the pre-digital TV tuner era. Nowhere on this site or on the product's packaging does it specify which type of DVI, so before you buy be sure you know whether you need DVI-I or DVI-D.
Product consists of two pieces: 1)Mini DisplayPort to HDMI 2)HDMI to DVI-D. The first adapter connects snugly with my MacBook. The adapter will not accidentally slide out of the MacBook, even with the weight of an HDMI cord plugged into its HDMI output.