What kind of DVI does a power mac G5 1.8 dual Processor have?

You need to tell us the specific model identifier because there are several models with this same general description.

That doesn't narrow it down any, I'm afraid. 🙂 So I'll cover the battlefield:

This covers the first G5 through the last G5 with 1.8 GHz CPUs.

DVI-I = integrated DVI. It supports both digital (IE HDMI, DVI-D) and analog (IE DVI-A, VGA) connections, and will automatically choose between the appropriate interface depending on the connected display.

No, I was just explaining DVI-I. But I am confused based on this article:

Power Mac G5: Display Compatibility - Support - Apple

"The Power Mac G5 video cards may have either an ADC port and a DVI-I port (Figure 2), or two DVI-I ports. Power Mac G5 computers are shipped with a DVI-to-VGA adapter for connecting to VGA displays."

You start with an image file on your computer. In the message window here you click on the Camera icon that you see above in the toolbar. A dialog will appear in which you can select the image file, then click on the Insert Image button.

Uploaded images should be kept to relatively small sizes in order to keep the file size down. You can use screen snaps for images from your display.

But his GPU does not have a DVI-I port. It's a 5200 GPU and supports only DVI and ADC according to specs.

There is one that fits your port on the GPU. I think, however, that Apple supported the ADC port.

Then you could get an ADC to DVI adaptor to use with whatever the monitor required.

Yours is DVI. The 6800 GPU has dual-link DVI, not the 5200.