Benfei 4K Mini Displayport(Thunderbolt) to HDMI Adapter with Audio, Mini DP Display Port to HDMI Converter(Adaptor) Gold-Plated Cord for MacBook Pro, MacBook Air, Mac mini, Microsoft Surface Pro 3/4

Warranty:Amazon 30 days buyer protection plan and 1 year product warranty from BENFEIThis adapter is used to mirror laptop content to the HDMI compatible HDTV or projector. Mini Display cord input, connect Mac Book, Mac Book Pro, or Mac Book Air. HDMI output connect the HDMI compatible devices by HDMI cable. Specification: Input Signal:Mini Display Port 1.1a and 1.2 Output Video:up to HDMI1.4a Input: Mini Display Port Male 20pin Output: HDMI Female Type A 19pin Mini DP MALE to HDMI Female, 6 Inch Adapter Vertical Frequency Range:50/60Hz Video Amplifier Bandwidth:2.25Gbps/225MHz HDMI:480i/480p,576p,720p,1080i/1080p@60hz, 1920x1200@60Hz,2560x1440,2560x1600,up to 3840*2160@30Hz External Power Supply:No external power needed Power consumption (Max):500mW Chipset:PS8421E Compatible modes: Mac Book Air, Mac Book Pro, iMac, and Mac mini with thunderbolt ports since 2011 are all supported. Mac Book Air, Mac Book Pro, iMac, and Mac mini or PC with mini display port are also supported. How to use: The product is easy to use, just plug in and play. If no audio, please go to system preference to select the HDMI as output or contact us You should assure that if your Mac has one of the following two kinds of port : mini Display port Thunderbolt