KPTEC Ultimate Mini DP (Thunderbolt) to HDMI Adapter, Compact 1080p Mini Display (mDP) Converter for Macbook Air, Macbook Pro, iMac, iMac Mini, Surface Pro Series - White Mini displayPort to HDMI cable allows you to connect your TV, computer, tablet, monitor, and other HDMI A devices to a Mini DisplayPort compatible device such as MacBooks, iMacs, and Macbook Pros. Full 1080p HD video. Full HD audio for the ultimate in surround sound. Compatible with Apple MacBook, MacBook Pro, or MacBook Air and other devices with Mini DisplayPort. Please Note: Not compatible with 2009 Early Macbook. 12-month warranty and 30 Days Money-Back Guarantee. The KPTEC thunderbolt to HDMI converter allows you to connecting a Mini DisplayPort compatible device to a HDTV, monitor, or projector; A separate HDMI cable is required. Supports PC resolutions up to 1920x1200 and HDTV resolutions up to 1080p. Plug and Play - no software or drivers required. Plug the Mini Display Port end into your laptop, and connect the HDMI end to an HDMI (Type-A) cable, then plug the cable into your HDMI input jack. Input: Mini Displayport (Thunderbolt) Male Output: HDMI Female Resolution: support 1920x1200 (1080p) Dimensions: 7.8 x 0.8 x 0.4 inches Cable Length: 4.7 inches Weight: 0.6 ounces The adapter is not a bi-directional adapter, it can only convert signal from mini displayPort to HDMI. Macbooks Pro/Air (before April 2010) with Mini DisplayPort that does not support audio out and will not transmit sound. 1x Mini DisplayPort to HDMI Adapter