REQUIRES USB-C PORT WITH DISPLAYPORT ALT MODE OR THUNDERBOLTKey Features - Premium Taiwanese chipset from Certified HDMI factory - Works with 16:9, 21:9 “Ultrawide”, and 32:9 “Super Ultra-Wide” monitors (see pictures for specific compatibility) - Support for HDCP to play content from iTunes, Netflix, Amazon Prime, etc - FreeSync and G-Sync compatible Resolution / Refresh Rates 1920x1080 ? 240hz 2560x1080 ? 180hz 3840x1080 ? 120hz 2560x1440 ? 144hz 3440x1440 ? 100hz 5120x1440 ? Not Supported 3840x2160 ? 60hz 5120x2160 ? Not Supported FAQ - Computer, monitor, TV, etc must all support faster refresh rates or will be limited to 60hz - Refresh rate for 4K is limited to 60hz or lower - This adapter does not charge devices. It is for video signals only - Will only convert FROM usb-c TO hdmi (will not convert from HDMI to USB-C)