Based on the images provided, that Dell desktop (likely a newer OptiPlex or Precision tower) is using DisplayPort as its primary video output.

Looking at the back of the machine, you can see two different types of ports capable of carrying a display signal:

1. The Main Video Output

The thick black cable currently plugged into the back is a DisplayPort cable.

• How to identify it: It has a rectangular shape with one corner "clipped" or slanted.
• The Port above it: There is a second, identical empty port right above the one being used, allowing for a dual-monitor setup without a dedicated graphics card.

2. The Secondary Option (USB-C)

Just below the plugged-in cable, there is a small, oval USB-C port with a "D" icon (DisplayPort over USB-C) next to it.

• This can also be used for video output if you have a USB-C monitor or a USB-C to HDMI/DP adapter.

Note on HDMI: Interestingly, this specific configuration doesn't appear to have a standard HDMI port built directly into the motherboard. If your monitor only has HDMI, you would need a DisplayPort to HDMI adapter or cable.

It's a classic case of "bleeding edge" clashing with "real world" utility. Labeling a machine Intel Core Ultra and then skimping on a legacy-friendly port like HDMI feels like a move straight out of the "We decided what's best for you" playbook.

Dell (and many enterprise manufacturers) have shifted toward a DisplayPort-first philosophy for a few reasons, though none of them make it less of a headache when you're just trying to plug in a standard monitor:

The "Why" (or the "Excuses")

• Daisy Chaining: DisplayPort allows you to run multiple monitors from a single port (MST), which HDMI generally doesn't handle as gracefully.
• Licensing Fees: HDMI requires a royalty fee per port/device. DisplayPort is a royalty-free standard, which saves them a few cents per unit-pennies that add up when you're shipping millions of office towers.
• The USB-C Push: They are betting everything on the "one cable" future. In their ideal world, you'd have a Dell monitor that provides power, data, and video through that single USB-C port, making the rest of the back panel redundant.

The "Ultra" Paradox

It is a bit ironic to have a high-end Ultra 7 processor-designed for heavy lifting and efficiency-paired with a port selection that requires you to carry a bag of dongles just to give a presentation. It's the "MacBook-ification" of the desktop; they give you incredible internal power but strip away the physical utility that makes a desktop a desktop.

If you're stuck without the right cable, you're essentially forced into the "Dongle Life."

Would you like me to see if there's a hidden HDMI port on a dedicated graphics card further down the back, or are you stuck with just those motherboard outputs?