Features:
Viewing your laptop on your HDTV doesn't get any easier. Simply, plug the Mini DisplayPort end into your laptop®, and connect the HDMI end to an HDMI (Type-A) cable, then plug the cable into your HDMI input jack. Your photos, your videos, your presentations, your games - view them all in HD on the big screen. The Mini DisplayPort adapter will need to be used with an HDMI cable (sold separately)
This cable can also extend or mirror your workstation to another screen
Give presentation to your classmates, students or colleagues for MacBook or laptop
Share videos with your friends and family on a bigger external screen or TV.
Support audio: DTS/DTS-HD, Dolby Digital / Dolby TrueHD, and Linear PCM (LPCM);
Elegant white colour, matches with your computers;
Mini size, easy to carry
Compatible For Macs/MacBooks with Mini DisplayPort / Thunderbolt
Compliant with Mini DisplayPort 1.1a, HDMI 1.3b;
Support resolutions up to 1080p (FullHD) and 1920 x 1200, no compromise in video quality
Support audio: DTS/DTS-HD, Dolby Digital / Dolby TrueHD, and Linear PCM (LPCM);
Progressive: 1920 x 1200, 1080p, 720p, 576p, 480p
Interlaced: 1080i, 576i, 480i1.2A
Compatible with:
For Models That Support Audio Pass-through:
For MacBook 13" Model 7,1 (Mid 2010)
For MacBook Pro 13" Model 7,1 (Mid 2010)
For MacBook Pro 15" Model 6,2 (Mid 2010)
For MacBook Pro 17" Model 6,1 (Mid 2010)
For MacBook Pro 13" Model 8,1 (Early 2011 / Thunderbolt)
For MacBook Pro 15" Model 8,2 (Early 2011 / Thunderbolt)
For MacBook Pro 17" Model 8,3 (Early 2011 / Thunderbolt)
For MacBook Air 11" Model 3,1 (Late 2010)
For MacBook Air 13" Model 3,2 (Late 2010)
For Mac mini Model 4,1 (Mid 2010)
For iMac 27" Model 10,1 (Late 2009)
For iMac 27" Model 11,1 (Late 2009)
For iMac 21.5" Model 11,2 (Mid 2010)
For iMac 27" Model 11,3 (Mid 2010)
For Mac Pro Model 5,1 (Mid 2010)

Basic Setup:
Connect the thunderbolt side of the cable to your book.
Connect the female HDMI end of the cable to an HDMI cable that goes to your TV/monitor/projector
Then you can view the movie or PPT on the big screen! Enjoy!

How to set resolution:
You can go into “System Preferences” > “Display“. You’ll be able to see 2 display preferences dialog, one for your prime laptop display and one for the external monitor. You can use the settings in dialogs to adjust the screen resolution, color intensity and if you have a monitor that can be swiveled (rotated) you can tell to rotate the display to a certain angle for that particular display.

How to set mirror function:
With your TV connected to laptop, open System Preference. Then select Display. Then select arrangement tag. Check mirror display

Specifications:
Length: 6 feet
Weight: 2.3 Oz
Connectors: Mini DisplayPort/Thunderbolt™ Port male and HDMI female