Mini DisplayPort (Mini DP / mDP) to HDMI Adapter
A Mini DisplayPort to HDMI adapter (also called a converter or dongle) connects a device with a Mini DisplayPort output (or Thunderbolt 1/2 port that carries DisplayPort signals) to an HDMI display, monitor, TV, or projector. It is commonly used with older MacBooks, MacBook Air/Pro, Mac Mini, Microsoft Surface Pro (1–6), Chromebooks, certain laptops, desktops, docking stations, and workstations that have Mini DP ports.
Description
These adapters convert the digital DisplayPort signal from the Mini DP source into an HDMI signal. They typically feature a male Mini DisplayPort connector on one end and a female HDMI port (or sometimes a male HDMI connector on cable-style versions) on the other. Many include a short integrated cable (often 6–12 inches / 15–30 cm) for flexibility and reduced strain on the port.
They are available as passive or active versions:
Most are bus-powered (draw power from the Mini DP port), require no external power supply or drivers, and support plug-and-play operation on Windows, macOS, Chrome OS, and Linux.
Specifications vary by model (passive vs. active, HDMI version, cable length). Common ranges for modern adapters:
| Specification | Typical / Common Values | Notes / Higher-End Examples |
|---|---|---|
| Input | Mini DisplayPort male (DisplayPort 1.2 or 1.4) | Thunderbolt 1/2 compatible |
| Output | HDMI female (or male on cable versions) | HDMI 1.4 or 2.0 |
| Max Resolution | 1920×1200 / 1080p @ 60 Hz (basic) 4K (3840×2160 or 4096×2160) @ 30 Hz or 60 Hz | Some advanced models reach 8K (7680×4320) @ 30/60 Hz with DSC |
| Refresh Rates | Up to 60 Hz at 4K; higher at lower resolutions (e.g., 144 Hz at 1080p, 120 Hz at 1440p) | Depends on source, cable, and display |
| Bandwidth | Up to 18 Gbps (HDMI 2.0) | Higher with DP 1.4 HBR3 input |
| Audio | Up to 7.1 channel digital | Uncompressed LPCM supported |
| HDR | Yes on many 4K models | HDR10 common |
| HDCP | 1.4 or 2.2 / 2.3 | Required for protected content |
| Color / Chroma | 8/10/12-bit; 4:4:4 / 4:2:2 / 4:2:0 | — |
| Power | Bus-powered from Mini DP port | No external power needed |
| Cable Length | Built-in 6–12 in (15–30 cm) common; longer cable versions available (1–15 ft) | — |
| Form Factor | Compact dongle or short cable | Aluminum or plastic housing |
| Operating Temperature | Typically 0°C to 40–70°C | — |
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