Introduction
The Amazon Basics Mini DisplayPort to HDMI Adapter (Model L51G) provides a simple solution for connecting devices equipped with a Mini DisplayPort or Thunderbolt port to an HDMI-enabled display. This adapter facilitates the transmission of high-definition video and audio signals, allowing you to extend your desktop or mirror your display on a larger screen, such as a monitor, television, or projector.

Front view of the Amazon Basics Mini DisplayPort to HDMI Adapter, showing the Amazon Basics logo and the HDMI output port.
Setup Instructions
This adapter is designed for plug-and-play functionality, requiring no additional drivers or software installation. Follow these steps to set up your adapter:
- Connect the Mini DisplayPort end: Insert the Mini DisplayPort connector of the adapter into the Mini DisplayPort or Thunderbolt port on your source device (e.g., laptop, desktop computer).

The Mini DisplayPort connector, which plugs into your source device.
- Connect an HDMI cable: Plug one end of a standard HDMI cable (not included) into the HDMI output port on the adapter.

The HDMI output port on the adapter, where you connect your HDMI cable.
- Connect to your display: Connect the other end of the HDMI cable to an available HDMI input port on your target display (e.g., TV, monitor, projector).
- Select input on display: Power on your display and select the corresponding HDMI input source using your display's remote control or on-screen menu.

Connection diagram: Laptop (Mini DisplayPort) → Adapter (HDMI Female) → TV/Monitor/Projector.
Operating Instructions
Once connected, your source device should automatically detect the external display. You can configure display settings through your operating system:
- Windows: Right-click on your desktop, select "Display settings," and choose your preferred display mode (e.g., Extend, Duplicate, Second screen only).
- macOS: Go to "System Preferences" > "Displays." Here you can arrange displays, adjust resolution, and select mirroring or extended desktop modes.
The adapter supports video resolutions up to 1920 x 1200 (1080p), ensuring clear and crisp video output.
Compatibility
This adapter is compatible with Mini DisplayPort and Thunderbolt 1/2 enabled devices. It is designed to connect to HDMI-enabled displays such as Blu-ray players, Fire TV, PS4, PS3, Xbox One, Xbox 360, computers, and A/V receivers.
Important Compatibility Note: This product does not support Thunderbolt 3 standard. It is not compatible with:
- MacBook Pro (2016 or later)
- MacBook Air (2018 or later)
- iMac (2017 or later)
- iMac Pro (All Models)
- Mac Mini (2018 or later)
- Mac Pro (2019 or later)
- iPads and iPhones

Diagram illustrating compatible (Mini DisplayPort, HDMI) and incompatible (DisplayPort, USB-C, USB-A, DVI-I, DVI-D) ports for this adapter.
Troubleshooting
- No display on screen:
- Ensure all cables are securely connected.
- Verify that the correct HDMI input source is selected on your display.
- Check your computer's display settings to ensure the external display is detected and configured correctly.
- Confirm your device is compatible with the adapter (refer to the Compatibility section).
- No audio:
- Ensure your display device supports audio via HDMI.
- Check your computer's sound settings to ensure the HDMI output is selected as the default audio device.
- Flickering or unstable display:
- Try a different HDMI cable.
- Ensure your display resolution is supported by the adapter and your display.
Specifications
| Feature | Detail |
|---|---|
| Product Dimensions | 9.25 x 1.46 x 0.59 inches |
| Item Weight | 1.12 ounces |
| Model Number | L51G |
| Connector Type | Mini DisplayPort (Input), HDMI (Output) |
| Color | White |
| Max Resolution Supported | 1920 x 1200 (1080p) |
| Compatible Devices | Blu-ray players, Fire TV, PS4, PS3, Xbox One, Xbox 360, computers, A/V receivers (with HDMI input) |
| Specific Uses For Product | PC |
Maintenance
To ensure the longevity and optimal performance of your adapter, follow these maintenance guidelines:
- Keep the adapter clean and free from dust. Use a soft, dry cloth for cleaning.
- Avoid exposing the adapter to extreme temperatures, humidity, or direct sunlight.
- Do not bend or twist the cable excessively, as this can damage internal wiring.
- Store the adapter in a safe place when not in use to prevent physical damage.
Warranty and Support
Amazon Basics products are designed for reliability and value. For information regarding warranty coverage or technical support, please refer to the official Amazon Basics website or contact Amazon customer service directly. You can typically find support resources and contact options by visiting Amazon Basics Store and navigating to their support section.





