Package included: 1 x 3IN1 Mini DisplayPort Adapter Specifications: Color: White Input Signal: Mini Display Port 1.1a Output Video: HD/DVI/VGA Input: Mini Display Port Male 20pin Output: HD Female Type A 19pin Connector: DVI Female (24+1) VGA Female 15Pin Vertical Frequency Range: 50/60Hz Video Amplifier Bandwidth: 2.25Gbps/225MHz HD/DVI/VGA:480i/480p,576p,720p,1080i/1080p External Power Supply: No external power needed Power consumption (Max): 700mW Compatibiltiy: for Apple iMac, for Mac Mini, for Mac Pro, for MacBook Air, for MacBook Pro 13 inch, for MacBook Pro 15 inch, for MacBook Pro 17 inch Attention: Size may be slight inaccuracy due to different batches of the products, or hand measurement. Please take real product as standard, thanks for your understanding! How to use it: The product is easily and conveniently use, with three output ports:DVI VGA HD and a Mini Display Port. And you can use one of them at a time as your demand, when you want to use the DVI output, you just need to connect the DVI devices using a DVI cable. And when you want to use the HD output, you just need to connect the HD devices using a HD cable. When you want to use the VGA output, you just need yo connect the VGA devices using a VGA cable.The Mini Display Port meed to connect Mac Book, Mac Book Pro, or Mac Book Air. Note : 1.User can only use one output port at one time. For example: When you use the HDMI-compatible port,you can't use DVI and VGA at the same time. 2.Only HDMI-compatible supports audio and video output at the same time, if you want VGA/DVI to support audio, you need to connect an audio cable See more5.100% Brand New, Plug and Play.Connect your New Gerneration for Macbooks, for Macbook Pro, for Macbook air to you display device with HDMI-compatible / DVI/ Displaypor interface. 4.Automatic detect the display by plugging and unplugging it. Powered from Mini Display Port source. 3.Support HD/DVI/VGA output with the max resolution of 1920x1080p60Hz, 225MHz/2.25Gbps per channel (6.75Gbps all channel), 12bit per channel (36bit all channel) deep color. 2.Support Mini Display Port 1.1a Dual-mode input.The HD can support audio output for iMac (Late 2009) and Mac Book Pro (Mid 2010). 1.This product with three output ports, and you can choose one of them to use at a time as you demand, the functions of the port as followings:DVI output, connect the DVI devices using a DVI cable; HD output, connect the HD devices using a HD cable;VGA output, connect the VGA devices using a VGA cable.