Warranty:Amazon 30 days buyer protection plan and 1 year product warranty from BENFEI

This 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.
Specification:

Input Signal:Mini Display Port 1.1a
Output Video:HDMI
Input: Mini Display Port Male 20pin
Output: HDMI Male Type A 19pin
Mini DP MALE to HDMI MALE, 10 FEET CABLE

Vertical Frequency Range:50/60Hz
Video Amplifier Bandwidth:2.25Gbps/225MHz
HDMI:480i/480p,576p,720p,1080i/1080p
External Power Supply:No external power needed
Power consumption (Max):700mW
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

Product Features

• Portable adapter connects a Mini DisplayPort (Thunderbolt Compatible) equipped laptop or desktop to an HDTV, monitor, or projector with HDMI input
• Compatible with Apple MacBook, MacBook Pro, MacBook Air, iMac, Mac mini, Mac Pro; Microsoft Surface Pro/Pro 2/Pro 3 (NOT Surface for Windows RT); Lenovo ThinkPad X1 Carbon, X230/X240s, L430/L440/L530/L540, T430/T440/T440s/T440p/T530/540p, W530/W540, Helix; Dell XPS 13/14/15/17, Latitude E7240/E7440, Precision M3800; Alienware 14/17/18; Acer Aspire R7/S7/V5/V7; Intel NUC; Asus Zenbook; HP Envy 14/17; Google Chromebook Pixel; Cyberpower Zeusbook Edge X6; Toshiba Satellite Pro S500, Tecra M11/A11
• Transmits both audio and video; Supports video resolutions up to 1920 x 1200 and 1080p (Full HD) and flawless audio pass-thru for uncompressed digital 7.1, 5.1 or 2 channels
• Low-profile connector does not block adjacent ports on your computer, has molded strain-relief for long life, and has ergonomically designed treads for easy plugging and unplugging
• The HDMI can support audio output for iMac (Late 2009) and Mac Book Pro (Mid 2010)