1. Introduction
The BENFEI USB C to VGA Adapter provides a solution for connecting devices with a USB-C port (supporting DisplayPort Alternate Mode) to a display device equipped with a VGA port, such as a monitor, projector, or HDTV. This adapter facilitates video output, allowing for extended desktop or mirrored display configurations.

Image 1.1: The BENFEI USB C to VGA Adapter, featuring a USB-C connector on one end and a VGA port on the other, encased in a grey aluminum shell.
2. Product Features
- Compact Design: This portable adapter is designed for ease of transport, making it suitable for presentations or extending display setups on the go.
- Superior Stability: Equipped with an advanced integrated circuit (IC) chip, the adapter efficiently converts the USB-C digital signal to a VGA analog signal, ensuring stable video transmission. The source USB Type-C port must support DisplayPort Alternate Mode (DP Alt Mode) for video output functionality.
- High Performance: Supports video resolutions up to 1920x1200 at 60Hz, including 1080P, 720p, 1600x1200, and 1280x1024, for clear display on compatible monitors or projectors. The plated USB-C connector enhances corrosion resistance and signal transmission, while molded strain relief improves cable durability.
- Plug & Play: No additional drivers or software installation is required for operation. Note that this adapter does not support power charging.

Image 2.1: View of the adapter highlighting its internal smart chip, which ensures stable signal conversion.

Image 2.2: Diagram illustrating the compact dimensions of the BENFEI USB C to VGA Adapter, with a cable length of 170mm.
3. Setup Guide
Follow these steps to connect your USB-C enabled device to a VGA display:
- Ensure your source device (laptop, tablet, smartphone) has a USB-C port that supports DisplayPort Alternate Mode (DP Alt Mode) for video output.
- Connect the USB-C connector of the BENFEI adapter into the USB-C port on your source device.
- Connect a standard VGA cable (not included) from your monitor, projector, or HDTV to the VGA port on the BENFEI adapter. Secure the VGA cable with the screws on the adapter's VGA port if available.
- Power on your display device and select the correct VGA input source.
- Your device should automatically detect the external display. If not, you may need to adjust display settings on your source device.

Image 3.1: Illustration of the BENFEI USB C to VGA Adapter connected to a laptop via USB-C and to a monitor via a VGA cable, demonstrating a typical setup.
Video: USB C to HDMI VGA Adapter Connection Demonstration
Video 3.1: This video demonstrates the connection process for a similar USB-C to HDMI/VGA adapter. While the product shown is a dual-output splitter, the principles of connecting the USB-C end to a laptop and the VGA end to a projector are applicable to the BENFEI USB C to VGA Adapter. It also illustrates the common issue of a laptop lacking direct VGA ports and the solution provided by such adapters.
4. Operating Modes
The adapter supports two primary display modes, configurable through your device's operating system display settings:
- Mirror Mode: Duplicates your primary screen's content onto the external VGA display. This is useful for presentations or sharing content with an audience.
- Extend Mode: Extends your desktop workspace across both your primary screen and the external VGA display, allowing for increased productivity by providing more screen real estate.

Image 4.1: A laptop connected to a large TV screen via the adapter, displaying the same content in Mirror Mode, providing a 1080P high-definition viewing experience.

Image 4.2: A laptop connected to a projector via the adapter, demonstrating its use for portable projection and clear presentations.
5. Compatibility
The BENFEI USB C to VGA Adapter is compatible with a wide range of devices that feature a USB Type-C port supporting DisplayPort Alternate Mode (DP Alt Mode). This includes, but is not limited to, the following:
- Laptops: 13"/15" MacBook Pro (2019, 2018, 2017), iMac, MacBook, MacBook Air, Google Chromebook Pixel, Lenovo 900, Dell XPS 13 (9350), Dell XPS 15 (9550), Dell XPS12 (9250), Dell Precision 5510, HP Spectre X2, HP Spectre x360, HP Elitebook Folio G1, HP Elite x2 1012 G1, Acer Switch Alpha 1, Acer Spin 7, Acer Chromebook R13, and other laptops with USB-C DP Alt Mode.
- Tablets: iPad Pro, Samsung Galaxy TabPro S, and other tablets with USB-C DP Alt Mode.
- Smartphones: iPhone 15 Pro/Max, Samsung Galaxy S23, LG G5, LG V20, HTC 10, and other smartphones with USB-C DP Alt Mode.
Important Note: Ensure your device's USB-C port supports video output (DisplayPort Alternate Mode) for the adapter to function correctly. This adapter is not designed for power charging.

Image 5.1: Visual representation of the adapter's universal compatibility, showing connections from USB-C devices (laptops, pads, phones) to VGA displays (projectors, TVs, monitors).
6. Product Specifications
| Specification | Detail |
|---|---|
| Brand | BENFEI |
| Model Number | 000165grey |
| Connector Type | USB Type C (Male), VGA (Female) |
| Max Resolution | 1920x1200 @ 60Hz (including 1080P, 720p) |
| Compatible Devices | Laptops, Tablets, Smartphones with USB-C DP Alt Mode |
| Product Dimensions | 1 x 1 x 1 cm (approx. 10 x 10 x 10 mm) |
| Item Weight | 28.35 g (approx. 1 Ounce) |
| Material | Aluminum Shell |
| Audio Support | No (VGA is video-only) |
| Power Charging | Not supported |
7. Troubleshooting
- No Signal on Display:
- Ensure your source device's USB-C port supports DisplayPort Alternate Mode (DP Alt Mode). Not all USB-C ports support video output.
- Verify that the VGA cable is securely connected to both the adapter and the display device.
- Check the input source selection on your monitor/projector to ensure it is set to VGA.
- Try restarting your source device.
- Test the adapter with another compatible USB-C device or display, if available, to isolate the issue.
- Incorrect Resolution or Display Issues:
- Adjust the display resolution settings on your source device to match the optimal resolution of your VGA display.
- Ensure your operating system and graphics drivers are up to date.
- Some older VGA displays may have limitations on supported resolutions or refresh rates.
- No Audio Output:
- VGA is a video-only interface and does not transmit audio. Audio must be routed separately from your source device (e.g., via the device's headphone jack or built-in speakers).
8. Maintenance
To ensure the longevity and optimal performance of your BENFEI USB C to VGA 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, direct sunlight, or high humidity.
- 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.
9. Warranty and Support
The BENFEI USB C to VGA Adapter comes with a Limited Warranty. For specific warranty terms and conditions, please refer to the product packaging or contact BENFEI customer support.
For technical assistance, troubleshooting, or further inquiries, please visit the official BENFEI website or contact their customer service department. Contact information can typically be found on the product packaging or the manufacturer's website.





