How to Identify DVI-D vs DVI-I Ports on a GPU

Identifying whether a graphics card features a DVI-D or a DVI-I port comes down to examining the pin layout on the connector, specifically the isolated section on the side opposite the main pin grid. DVI-D (Digital) ports transmit purely digital signals, whereas DVI-I (Integrated) ports transmit both digital and analog signals. This guide details the exact visual differences between these two ports so you can quickly determine which one is on your GPU without needing specialized tools.

The Key Visual Difference: The Flat Blade and Surrounding Pins

To distinguish between the two ports, look at the isolated section on the side of the female port on your GPU. This section consists of a flat, horizontal slot and, depending on the type, four additional pinholes surrounding it.

• DVI-I (Integrated): Features a flat horizontal slot flanked by four pinholes (two above the slot and two below it). This configuration resembles a plus sign or a cross with a horizontal bar. These four extra pins are responsible for carrying the analog VGA signal.
• DVI-D (Digital): Features only a single flat horizontal slot with no holes above or below it. Because it is purely digital, the four analog pinholes are completely omitted, leaving a blank, solid plastic or metal space around the flat slot.

Quick Reference Summary

• DVI-I: 1 flat horizontal slit + 4 surrounding pinholes.
• DVI-D: 1 flat horizontal slit + 0 surrounding pinholes (completely flat space).

Why the Difference Matters

A standard DVI-D cable will physically plug into both DVI-D and DVI-I ports because it lacks the four analog pins. However, a DVI-I cable or a passive DVI-to-VGA adapter has the four physical pins intact and will physically not fit into a DVI-D port. Checking for those four pinholes around the horizontal slot on your GPU ensures you buy the correct cable or adapter for your monitor setup.