The Atlona HDMI/Mini DisplayPort to Mini DisplayPort Scaler and Switcher is a dual input scaler, which scales HDMI input with stereo audio for display on a monitor with a Mini DisplayPort connector. With the ability to scale HDMI signals up to 2560 x 1440, the scaler supports native resolution of an Apple iMac 27" and Apple 24". Featuring HDMI and a mini display port input, the scaler also doubles as a switch, allowing 2 sources to be connected simultaneously with a single display.It also converts 50 Hz signals to 60 Hz signals. Supporting 3-D motion video adaptive, 3-D de-interlacing, hue, saturation, sharpness, RGB (color tone) level and aspect ratio size, the HDMI / Mini DisplayPort to Mini DisplayPort Scaler and Switcher allows you to adjust the picture quality for crystal clear display via manual buttons or an IR remote.