usb c to dvi-d dual link active adapter, 3840 x 2160 @ 30hz, 2560 x 1600p @ 60hz, 268.5mhz clock | reversible usb type-c connector, compliant to dual link dvi-d specifications., hdcp supported which is not for the apple cinema monitors | attention: for certain apple cinema montiors without hdcp support, product item code cac-1510-a hdcp off need to be ordered. this adapter does not transmit hdcp signals and works with older apple cinema monitors. | "usb c input: enables reversible plugging and provides total compatibility with the latest computers and devices. requires usb-c port supporting "displayport alternate mode" | the adapter requires no external power and is ideal for use with the latest notebooks and ultrabook's like apple macbook pro, macbook, google chromebook, for apple osx users, the resolution is hidden in the display options, when you hold down the "option" key while changing the resolution 2560*1600 can be selected." | for apple osx users, the resolution is hidden in the display options, you need to hold down the "option "key while changing the resolution, then the resolution 2560x1600 can be selected", We do not recommend this Adapter in combination with the Dell W3007 30 Inch monitor.