1、Resolution Setting: If your High Definition Multimedia Interface input device, supports 4K 60hz, please set the resolution to 4K 30Hz or lower 2、1 in 2 Out : 4K HD 1 in 2 Out two screens at the same time display, connect two devices with HDM interface such as display or projector at the same time 3、Small and Compact: The small and compact body does not take up too much use space, which is convenient for storage and use 4、Pay Attention: HD multimedia interface splitter only supports mirroring and mirrored screens, no extensions are supported. Each screen will display the same image 5、PCB and Plastic: 4K HD multimedia interface splitter is made of PCB board and plastic shell material, which is wearable and durable, and can be used with confidence 1 x HD Multimedia Interface Splitter 1 x Power Cord Item Type: HD Multimedia Interface SplitterMaterial: PCB Board, Plastic ShellSize:Approx. 63 x 52 x 11.8mm / 2.5 x 2.0 x 0.5inWire Length: 50cm/ 19.7in