DisplayPort Explained for Monitor Buyers
DP stands for DisplayPort, a digital display interface carried by a rectangular 20-pin connector that usually includes a small latch. If a monitor spec sheet lists a DP port, it accepts a DisplayPort cable from a graphics card, dock, or laptop. DisplayPort 1.4 moves 32.4 Gbps of link bandwidth, more than HDMI 2.0 at 18 Gbps. This article explains what DP means on a monitor, how to read the icon, and how the port differs from HDMI or USB-C.
Quick Answer / Summary
On a monitor, DP marks a DisplayPort input. The port is a 20-pin connector with a latching clip, and it carries digital video plus audio. DisplayPort 1.4 supports 32.4 Gbps, enough for high refresh rates at common resolutions. If the icon shows a D with a P shape, or a rectangle with a corner notch, the monitor expects a DisplayPort cable. HDMI inputs use a different trapezoid connector and are not interchangeable without an adapter.
The DisplayPort Port and Its 20-Pin Connector
DisplayPort uses a rectangular connector with 20 pins and a latch that holds the plug in place. The latch reduces accidental disconnects when a monitor sits on an adjustable arm or a rolling cart. A DP source can feed HDMI or DVI with a passive DP++ adapter, because those standards share the same signal lanes.
The same connector appears on desktops, docking stations, and many laptops. Some monitors label the input as DP IN and add a second DP OUT for daisy chaining. When you see DP beside a number, that number is the DisplayPort revision, not the screen size.
Reading the DP Icon on a Monitor
Monitor menus and port labels use a small icon rather than the full word. The DisplayPort icon looks like a rounded rectangle with a notched corner and a short D and P inside. HDMI uses a symmetric trapezoid with angled sides. A USB-C port may carry DisplayPort Alt Mode, which feeds a DP monitor through an adapter cable.
DisplayPort Versus HDMI on a Spec Sheet
A monitor spec sheet lists the port type and the supported revision. DisplayPort 1.4 carries 32.4 Gbps, while HDMI 2.0 carries 18 Gbps. That bandwidth difference matters when you push high refresh rates at high resolution, because more data per second must fit through the link.
Both carry digital video and audio. The choice usually follows the source: a graphics card with DP outputs pairs best with a DP monitor, and a media player with HDMI outputs pairs best with an HDMI input. Passive DP++ adapters cover DP source to HDMI, but HDMI source to DP needs an active chip.
When a Monitor Has DP and HDMI Together
Most modern monitors include both inputs so one panel can serve a PC and a console. The monitor switches between them through its on-screen menu. Check the revision printed near each port: a DP 1.4 input and an HDMI 2.0 input are not equal in bandwidth, so route the demanding source to the faster port.
Spec Sheet Fields Worth Checking
Alongside the port type, read the native resolution, refresh rate, and any HDR line. Then match those figures to the bandwidth of the cable you plan to buy. A basic included cable may limit a high refresh panel, so the spec sheet and the cable rating should agree.
If you cannot find the revision, the box contents list and the port labels together usually answer the question.
DP++ and Compatibility Notes
A DP++ label means the port can output HDMI or DVI signals through a passive adapter. Without that label, an active adapter is the safe choice for HDMI and DVI displays. Keep the adapter short and rated for the resolution you actually run.
Comparison Table
| Interface | Bandwidth | Typical use |
|---|---|---|
| DisplayPort 1.4 | 32.4 Gbps | High refresh and high resolution |
| HDMI 2.0 | 18 Gbps | Media players and consoles |
| DVI-D dual link | Up to 2560×1600 | Legacy digital panels |
| VGA | Analog | Legacy analog displays |
Table: Common monitor video interfaces
Practical Application Scenarios
- An engineer sees DP 1.4 printed on a 27-inch panel and confirms the source card also has a DP output.
- A procurement team replacing desktops checks that each new tower has a DP output to match the installed monitors.
- An AV integrator reading a spec sheet confirms the DP input revision before ordering cables for a video wall.
- A user with a USB-C laptop picks a DP Alt Mode adapter to drive a monitor that only lists DP IN.
Related Products and Further Reading
- monitor cable product list – Browse DisplayPort and HDMI monitor cables for common desk setups.
- contact our team – Ask which DP revision fits your panel before you place an order.
- monitor cable FAQ – Read common questions about ports, cables, and adapters.
- HDMI to monitor cable guide – Compare HDMI and DisplayPort inputs on the same panel.
Frequently Asked Questions
Does DP mean the monitor has a DisplayPort input?
Yes. DP on a monitor label or menu marks a DisplayPort input, which accepts a DisplayPort cable from a compatible source.
Can I plug an HDMI cable into a DP port?
No. The connectors differ in shape, so an adapter or a different cable is required. A DP source can drive HDMI through a passive DP++ adapter, but HDMI to DP needs an active adapter.
Is DisplayPort better than HDMI?
Not universally. DisplayPort 1.4 offers 32.4 Gbps versus HDMI 2.0 at 18 Gbps, but the better choice depends on your source and display features.
What does DP++ mean?
DP++ marks a dual-mode port that can output HDMI or DVI through a passive adapter, which simplifies connecting legacy displays.