How to Connect Two Computers to One Monitor and Keyboard
The Complete Guide for Beginners
What We Want to Do
Imagine you have two computers in your office, but you want to use just one monitor and keyboard for both of them. Instead of having two monitors, two keyboards, and two mice taking up space, you can "share" them between your computers.
This process is called peripheral sharing, and it's a lot easier than it sounds. Think of it like having a switch that lets you switch from one computer to another with the push of a button.
Many people have a computer for work and a personal computer, or a laptop and a desktop. Instead of constantly changing cables or having duplicate equipment, they can use the same components for all their computers.
The Main Methods
There are three basic methods to achieve what you want. Each has its advantages and disadvantages, depending on your needs.
This is the simplest solution. It's a small device that connects to your monitor, keyboard, and mouse, and has slots for connecting multiple computers. With a button, you choose which computer you want to use.
This method uses special programs that you install on both computers. The computers are connected to each other over a network, and you can move the mouse from one computer to the other as if they were two monitors.
Many modern monitors have multiple inputs and can accept signals from more than one computer. You connect each computer to a different input and switch between them from the monitor's menu.
The Easiest Solution: The Switch
For most users, the best option is to buy a switch. These devices usually cost between 30-100 euros and are very easy to use.
• Make sure it supports your screen resolution
• Check that it has the correct types of connections (HDMI, USB, etc.)
• See if it supports the number of computers you want to connect
Setup is simple: connect your monitor, keyboard, and mouse to the switch, then plug each computer into the corresponding slots on the switch. When you want to switch computers, simply press the switch button.
The Software Solution
If your computers are connected to the same network, you can use special programs that do the job electronically. The most well-known are Mouse without Borders of Microsoft and the Synergy.
These programs allow you to move your mouse from one computer's screen to another, as if they were two monitors connected to the same computer. You can also copy and paste text between computers.
This method requires each computer to have its own monitor. You cannot share a screen this way.
Using the Screen as a Switch
If your monitor has more than one input (e.g. HDMI and VGA), you can connect each computer to a different input. For the keyboard and mouse, you will need a simple USB switch or connect them manually when changing computers.
This method is economical but not as convenient, because you have to change the input from the on-screen menu and reconnect the keyboard and mouse.
Practical Advice
Tie up cable cords to keep everything tidy. A messy space with cables everywhere will make your life difficult.
Don't buy cables that are much longer than you need. Cables that are too long create clutter and can affect signal quality.
If possible, try the solution you're considering before buying it, or buy from a store that allows returns.
Before buying new equipment, check if your monitor already has multiple inputs. Many times you can solve your problem with a simple USB switch for your keyboard and mouse, which only costs 10-15 euros.
Common Problems and Solutions
The screen does not show an image: Make sure all cables are securely connected and that you have selected the correct input on the monitor and switch.
The keyboard or mouse is not working: Some switches take a while to "learn" your devices. Disconnect and reconnect the USB cables.
The screen resolution is wrong: This happens when the switch cannot support the high resolution you want. Check the switch specifications.
There is a delay in switching: This is normal with some switches. If it bothers you, look for switches with quick toggles.
Conclusion
Connecting two computers to one monitor and keyboard is a practical solution that can save you space, money, and time. The best method depends on your needs and budget.
For most users, a simple switch is the ideal solution. It is easy to use, reliable and does not require special knowledge for installation.
Regardless of the method you choose, remember that good organization and patience at the beginning will save you a lot of trouble in the future.
