Bi-Directional Displayport 1.4 swtich works for 1in 2out or 2in 1 out at 8K@30Hz, 4K@120Hz. Bi-directional design to meet your different office or entertainment expectation. Practical and powerful than those dp 1.0 swtich or only support 2in 1out switch. (this is a swtich,not a splitter, when under 1in 2out, 2out of switch can not display simultaneously) Parameter Info Audio Video Synchronization, Bandwidth 32.4Gbps, resolution up to 8K@30Hz, 4K@120Hz, 2K@144Hz, 1080P@240Hz. Also 3D resolution and HD audio, HDR, 32 channels sound effect, And back compatible with all DP standard. To enjoy best visual effect, you need to use standard dp 1.4 cable Plug and PlayUpgraded chip used and no more power cable need for daily uses. Just plug in qualified dp cables, then press the button to select signal or display, the LED light will show you which port is active. Simple but effective.(for long time running, please plug in power cable to enable a stable power supply)