ETvalley Mini Display Adapter Port Thunderbolt to HDMI Adapter for Apple MacBook Pro MacBook Air Mini DP Port 3 in 1(White), 2.2 x 2.2 x 0.6 inches The 3 in 1 display port HDMI can support audio output for an iMac (late 2009) and a MacBook Pro (Mid 2010). Supports HDMI/DVI/VGA output with the maximum resolution of 1920x1080p at 60Hz, 225MHz/2.25Gbps per channel (6.75Gbps all channels), 12bit per channel (36bit all channel) deep color. It automatically detects the display by plugging and unplugging the device in question. Doesnt need an external power supply as its powered from the Mini Display Port source. No more cable tangle. Supports Mini Display Port 1.1a Dual-mode input.