- Disconnect the PC.
- Look around the back of the system unit → find the horizontally arranged VGA/DVI/HDMI/DP video adapter connector.
- Connect the additional monitor to the socket of video card
- Connect the auxiliary screen to the power source.
- Turn the computer on.
Examine the backside of the system unit → find the horizontally arranged VGA/DVI/HDMI/DP video adapter slot. Connect an additional monitor to the video card socket. Please note! If the primary display is connected to the motherboard (vertically), then remove it and install it in the video card (horizontally).
Multiple slots in the video card is a must to connect two or more monitors to the same computer at the same time. You cannot connect multiple displays using the video connector on the motherboard (the vertical jack on the top of the back panel).
How To Enable Motherboard HDMI Port for Multiple Monitors. Use Graphics Card & Integrated Graphics
In order to combine 3 monitors into one system, one must be connected via DisplayPort or miniDisplayPort (miniDP), the second via DVI, and the third via VGA, HDMI, or the same DVI. If you have 4 monitors, two monitors should be connected to DisplayPort, the third one to DVI, and the fourth one to VGA or HDMI.
Comparing the video connector on your computer to the monitor connector
The best-case scenario is when both the display and the computer have the same type of video connectors. Just compare them visually. each connector has its own unique design. Monitors can also have one single or multiple video connectors, as shown in this photo:
If there is more than one connector in the design of the display, you can use any of them. Normally the monitor will automatically start receiving a signal from the port the cable is currently connected to. If they do not, then you will have to do some digging in the monitor‘s settings menu. The needed parameters are usually located in the section with a name like “Input Source” or “Signal Source” if the menu is russified:
There is usually an option in the monitor settings menu to enable automatic detection of the signal source. You can’t see it in the image above, but here it is:
As you can see, the “Auto Select” option, t.е. “Auto Select” is disabled in this case, but easy to activate.
To connect two monitors to the computer, remember that both monitors should be connected to the same video card. If your monitor is connected to the integrated graphics card (VGA or HDMI socket is on the motherboard), disconnect it and connect to a discrete graphics card (separate video adapter).
The connection is made as follows:
- Switch off PC.
- Examine the back of the system unit → Locate the horizontally located VGA/DVI/HDMI/DP video adapter socket.
- Connect an additional monitor to the video card slot.
- Connect an additional monitor to the power supply.
- Turn on your computer.
What kind of video card for two monitors?
Graphics cards with the number of supported monitors is 2
- 4 188 GigaByte GeForce GT 710 954Mhz graphics card.
- 5 220 MSI GeForce GT 730 700Mhz PCI-E Graphics Card.
- 4 968
- 7 825
- 5 424
- Asus GT710 1Gb Video Card (GT710-SL-1GD5-DI)
- 5 708
- GIGABYTE CI-E NV GV-N710D3-2GL graphics card.
Connecting the monitor itself via HDMI is also no problem. It is connected to the computer. either to the motherboard with an integrated video card, or to the additionally installed video card. You plug each end of the cable into the corresponding connector (port) on the motherboard (graphic card) and the monitor.
So, as you may have already understood from the above, you can connect the monitor to PC: Either to PC motherboard with integrated video card, which already has the corresponding video input. Or a discrete, that is installed as an additional video card.
The thing is that old video cards had DVI-I output with the possibility to connect such monitors through DVI-VGA adapter. But also don’t forget that one or more monitors can be still connected to the motherboard (if it supports simultaneous operation of discrete and built-in graphics).
To connect two monitors to the computer, remember that both monitors should be connected to the same video card. If your monitor is connected to the integrated video card (VGA or HDMI socket on the motherboard), unplug it and connect to the discrete video card (separate video adapter).
To do this, depending on the motherboard manufacturer, press the “Del”, “F2”, “F5” or “F12” key during the boot process. In the BIOS Setup, find the option to select the active graphics adapter and enable the discrete graphics card, setting the PCIe-adapter as the primary device.
Connection is made as follows:
- Disconnect PC.
- Examine the back of the system unit → find the horizontally located VGA/DVI/HDMI/DP video adapter connector.
- Connect the additional monitor to the video card slot.
- Connect the additional screen to the power supply.
- Turn on your computer.
In order to combine 3 monitors into one system, one of them must be connected via DisplayPort or miniDisplayPort (miniDP), the second one via DVI, and the third one via VGA, HDMI or the same DVI. If there are 4 monitors, two monitors should be connected to DisplayPort, the third one to DVI and the fourth one to VGA or HDMI.
If you do not have a discrete video card, you have to connect the monitor to the motherboard. It is not difficult to find the needed slot: The motherboard slot is located above and almost always vertically. Ports on a discrete graphics gas pedal are usually located below everything and horizontally.