Bi-directional EDID,the source can be male or female connect.Pixel Format:YCbCr 4:4:4, 4:2:2, 4:2:0,RGB.Audio: 2.1 Chnothing changes to turn off the TV multi-monitor system ( or even unplug the HDMI ) without the PC going into convulsions trying to rearrange the desktop for the remaining screens. The PC will doesn't notice that one of it's screens disappeared！work with mac. thunderbolt to HDMI（supports up to 4K@60fps） you will discover this as the"miracle fix" for Windows not liking 4K displays | Perfect match multimedia setup that requires keeping HDMI displays in "sync" all the time, HDMI lock EDID solve a "loss of sync" issue with multiple HDMI displays. No more desktop re-arranging each time you power on or off a TV， displays can plugged into a full size.DP to HDMI adapters flawlessly.Using it with not always connected to a screen clients ，Mac mini, raspberry Pi, NUC, Jetson Nano， connected to a 3840p monitor. but true 4K (4096x2160), with refresh rates from 23hz to 60hz | HDMI lock EDID can be used close laptop lid remote into at Designat resolution, and can serve as a virtual monitor when it is not used。This fixed desktop rearrangement when turning off surround sound receiver. Computer stays on as it's running Windows 8.1 with Media Center.&also be used as a dummy plug,Just plug a monitor into it once and the remove that monitor. | Worked great-Keeping the EDID consistent-Used for When Renegotiate every time either the sink or the source would start,stop,switch or else ,It still passes through the video and audio correctly (tested in 2-channel stereo). accelerates the negotiation when the display is frequently off.Avoid distorted image - When no software work around,plugged this adapter between the HDMI switch and work laptop and it changes the EDID,get the option back in Windows. No more distorted. | Default resolution optional:3840 x 2160@60Hz,24-hour technical maintenance consultation, product quality problem 2 months unconditional replacement, not satisfied with 1 month full refund service!NOT SUPPORT THE HDCP!