Right Cable for Computer and Monitor

The right display cable depends on the ports in the computer, the monitor and the resolution or refresh rate you want to use. HDMI, DisplayPort, USB-C, DVI and VGA may look like small details, but the wrong cable can limit image quality or prevent the monitor from working at all.

Bitmaster helps customers in Helsinki choose the correct cable, adapter or docking solution for laptops, desktop computers and monitors. Bring a photo of the ports or the devices themselves if you are unsure.

Common display connections

• HDMI: common on monitors, TVs, laptops and desktops.
• DisplayPort: common on desktop PCs and business monitors, often best for high refresh rates.
• USB-C: can carry display signal on many modern laptops, but not every USB-C port supports video.
• DVI: older digital monitor connection, still found on some office displays.
• VGA: older analog connection, usable only when newer options are not available.

Adapters can be directional

Some adapters only work in one direction, for example from DisplayPort computer to HDMI monitor. Passive and active adapters also behave differently. This is a common reason why a cable that physically fits still does not show an image.

What to check before buying

• Computer output port and monitor input port
• Required resolution and refresh rate
• Whether audio should travel through the cable
• Whether the laptop USB-C port supports DisplayPort Alt Mode
• Whether a dock or adapter needs external power

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