EDID, or Extended Display Identification Data, is a metadata format used to describe their capabilities to a video source. The EDID data structure includes the manufacturer name and serial number, product type, phosphor or filter type, time of day supported by the display, etc.
Why to use EDID?
In short, EDID is the ID card of a monitor. By reading the monitor's EDID, the computer can know the properties of that monitor and then make the PC output the video that best suits that monitor.
When monitor is connected to PC, there will be a conversation between them, ‘Hello, PC! I’m monitor A, I can display multiple resolutions. The max resolution I support is XXX” “Hello, monitor! I have received your information, I will output to you at the best resolution now.”
If PC is unable to read EDID, what will happen?
If the computer is unable to get the EDID of the display, the computer can’t know which display device it is connected, then PC may output a very low resolution picture or even not output.
Ordinary KVM switch
In terms of ordinary KVM switch, as only one of the computers that connected to KVM can be selected to connect to the display, when switching the ports of the KVM, the other computers are unable to access the display’s EDID, then the computers change the display settings accordingly, which will cause a problem that after users set the window position, it will return to original position the next time it switches to current channel.
TESmart KVM switch Features
In TESmart's KVM switch, we add EDID emulators in each input port, so while switching the input ports, no matter the computer is current active selected or not, the computer still can always get correct EDID. This keeps the display settings of the computer would not be changed while switching.
TESmart KVM switch Recommendation
- TESmart 2-Port HDMI KVM Switch - HKS0402A1U: This KVM switch allows you to control two computers with a single set of keyboard, mouse, and monitor. It supports HDMI video up to 4K@30Hz resolution and provides seamless switching between computers. It also features a compact design and plug-and-play functionality, making it ideal for use in home or office environments.
- TESmart 4-Port HDMI KVM Switch - HKS0802A10: This KVM switch allows you to control up to four computers with a single set of keyboard, mouse, and monitor. It supports HDMI video up to 4K@60Hz resolution and provides fast and stable switching between computers. It also features advanced EDID management, USB 2.0 hub, and hotkey switching, making it ideal for use in high-performance applications such as gaming, design, and multimedia.