Mini DisplayPort (mDP) 20-Pin Interface
Miniaturized 20-pin DisplayPort connector introduced by Apple and later standardized by VESA, electrically identical to full-size DisplayPort and reused as the physical connector for Thunderbolt 1 and 2.
Aliase:Mini DisplayPort, mDP, Mini DP, Thunderbolt 1/2 Connector
Mini DisplayPort Receptacle (Front View)
20 Pins
Pinout Table20
| Pin | Signal / Name | Type | Alternative Functions |
|---|---|---|---|
| 1 | ML_Lane 0+ | Digital | Main Link Lane 0 (Positive Differential Signal) |
| 2 | GND | Ground | Ground Return for Lane 0 |
| 3 | ML_Lane 0- | Digital | Main Link Lane 0 (Negative Differential Signal) |
| 4 | ML_Lane 1+ | Digital | Main Link Lane 1 (Positive Differential Signal) |
| 5 | GND | Ground | Ground Return for Lane 1 |
| 6 | ML_Lane 1- | Digital | Main Link Lane 1 (Negative Differential Signal) |
| 7 | ML_Lane 2+ | Digital | Main Link Lane 2 (Positive Differential Signal) |
| 8 | GND | Ground | Ground Return for Lane 2 |
| 9 | ML_Lane 2- | Digital | Main Link Lane 2 (Negative Differential Signal) |
| 10 | ML_Lane 3+ | Digital | Main Link Lane 3 (Positive Differential Signal) |
| 11 | GND | Ground | Ground Return for Lane 3 |
| 12 | ML_Lane 3- | Digital | Main Link Lane 3 (Negative Differential Signal) |
| 13 | CONFIG1 | Ground | Configuration 1 (Connected to Ground on Source) |
| 14 | CONFIG2 | Ground | Configuration 2 (Connected to Ground on Source) |
| 15 | AUX CH+ | Digital | Auxiliary Channel (Positive Differential Half-Duplex Line) |
| 16 | GND | Ground | Ground Return for AUX Channel |
| 17 | AUX CH- | Digital | Auxiliary Channel (Negative Differential Half-Duplex Line) |
| 18 | HPD | Digital | Hot Plug Detect (Interrupt & Status Signal from Display) |
| 19 | Return | Ground | Power Return Ground |
| 20 | DP_PWR | Power | +3.3V DC Power Supply (max. 500mA for Active Adapters/Converters) |