This adaptor converts the Mini DisplayPort standard (input) to DVI-D (output) so that you can use Apple laptops (and other Mini DisplayPort devices) with displays that accept DVI-D type connectors.* Converts from DisplayPort signal to DVI signal* Mini DisplayPort 1.1a input and DVI output* DVI highest video resolution 1080p, DVI 225MHz/2.25Gbps per channel (6.75 Gbps all channel) bandwidth, DVI 12bit per channel (36bit all channel deep colour.* Powered via the Mini DisplayPort source.Compatible with Mini DisplayPort enabled MacBook, MacBook Pro, and MacBook Air.