DisplayPort Pinout Diagram and 20-Pin Signal Map
20-pin rectangular connector
Standards: VESA DisplayPort 1.4, VESA DisplayPort 2.0, VESA DisplayPort 2.1
What is the DisplayPort pinout?
The DisplayPort Connector has 20 pins. Pin 1 is ML_0+ (data). Pin 2 is GND (ground). Pin 3 is ML_0- (data). Pin 4 is ML_1+ (data). Plus 16 more pins.
Standards: VESA DisplayPort 1.4, VESA DisplayPort 2.0, VESA DisplayPort 2.1
Pin Assignment Table
| Pin | Signal | Type | Description |
|---|---|---|---|
| 1 | ML_0+ | data | Main Link Lane 0+ |
| 2 | GND | ground | Ground |
| 3 | ML_0- | data | Main Link Lane 0- |
| 4 | ML_1+ | data | Main Link Lane 1+ |
| 5 | GND | ground | Ground |
| 6 | ML_1- | data | Main Link Lane 1- |
| 7 | ML_2+ | data | Main Link Lane 2+ |
| 8 | GND | ground | Ground |
| 9 | ML_2- | data | Main Link Lane 2- |
| 10 | ML_3+ | data | Main Link Lane 3+ |
| 11 | GND | ground | Ground |
| 12 | ML_3- | data | Main Link Lane 3- |
| 13 | CFG1 | reserved | Config 1 (Ground) |
| 14 | CFG2 | reserved | Config 2 (Ground) |
| 15 | AUX+ | data | Aux Channel+ |
| 16 | GND | ground | Ground |
| 17 | AUX- | data | Aux Channel- |
| 18 | HPD | data | Hot Plug Detect |
| 19 | GND | ground | Return |
| 20 | PWR | power | Power (3.3V/500mA) |
Signal Types
Common Applications
Need another printable connector reference?
Use the pinout as a working reference now, then jump to the full library or the next workflow when you need it.
Browse more printable connector references →The DisplayPort connector has 20 pins: Pin 1 (ML_0+), Pin 2 (GND), Pin 3 (ML_0-), and Pin 4 (ML_1+). Plus 16 more pins. Common in PC Monitors and Graphics Cards.
DisplayPort Pinout Guide
DisplayPort uses packet-based transmission similar to Ethernet, making it highly scalable and efficient. It features 4 main lanes for video data (each supporting up to 20 Gbps in DP 2.0) and a bidirectional auxiliary channel for EDID, DPCD, and other control data. Unlike HDMI, DisplayPort supports Multi-Stream Transport (MST) for daisy-chaining multiple monitors from a single port, a feature particularly useful for workstation setups.
Wiring Tips & Best Practices
Pin 20 (DP_PWR) provides 3.3V/500mA for powering active adapters and dongles. VESA-compliant cables leave Pin 20 disconnected at the sink (monitor) end to prevent power back-feeding. The Hot Plug Detect (HPD) pin must transition cleanly for reliable monitor detection. For high bandwidth modes (HBR2/HBR3) required for 4K 144Hz or 8K, use VESA-certified cables. For cable runs over 3 meters at high bandwidths, use active cables with built-in signal repeaters.
Common Issues
Pin 20 connected at both ends causes power back-feeding between PC and monitor - always use certified cables. Cheap passive cables may not support high bandwidth modes (HBR2/HBR3) required for high resolutions and refresh rates. Monitor not detected is often caused by a floating or noisy HPD line. DisplayPort Alt Mode over USB-C requires specific cable certification - not all USB-C cables support DP Alt Mode. Mini DisplayPort to full-size adapters must be high quality to avoid signal degradation at high bandwidths.
Why Use Interactive Diagrams?
- Accuracy: Hover over pins to see exact signal names and descriptions
- Clarity: Color-coded by signal type (power, ground, data)
- Printable: Export clean diagrams for shop floor reference