1. Introduction
This instruction manual provides detailed information on the proper use, setup, and maintenance of your rgzhihuifz Type-C Male to USB3.0 Male Adapter. This adapter facilitates high-speed data transfer and charging between devices with USB Type-C ports and devices with USB 3.0 Type-A ports. Please read this manual thoroughly before use to ensure optimal performance and longevity of the product.
2. Product Overview
2.1 Key Features
- Connector Type: USB Type-C Male to USB 3.0 Type-A Male
- Data Transfer Speed: Up to 5 Gbps (Super Speed USB 3.1 Gen 1)
- Charging Support: Up to 3A
- Compatibility: Compatible with PCs, Macs, mobile phones, and other devices with USB Type-C and USB 3.0 ports.
- Design: Compact and durable for use in various environments.
- Backward Compatibility: Fully backward compatible with USB 3.0/2.0/1.1/1.0 devices.
2.2 Package Contents
- 2 x rgzhihuifz Type-C Male to USB3.0 Male Adapters

Image: Two rgzhihuifz Type-C Male to USB3.0 Male Adapters. One adapter has a USB-C male connector on one end and a USB-A male connector on the other. The second adapter is identical. Both adapters feature a black housing with a textured grip. The USB-A connector has a blue interior, indicating USB 3.0 capabilities.
3. Setup
The rgzhihuifz Type-C Male to USB3.0 Male Adapter is designed for simple plug-and-play functionality. No drivers or software installation are required.
- Identify Ports: Locate the USB Type-C port on your source device (e.g., smartphone, tablet, laptop) and the USB 3.0 Type-A port on your target device or peripheral (e.g., computer, external hard drive, USB hub).
- Connect Adapter: Insert the USB Type-C male end of the adapter into the USB Type-C port of your source device.
- Connect Peripheral: Insert the USB 3.0 Type-A male end of the adapter into the corresponding USB 3.0 Type-A port of your target device or peripheral.
- Verify Connection: Ensure both ends of the adapter are securely seated in their respective ports.

Image: A pair of rgzhihuifz Type-C Male to USB3.0 Male Adapters. This view clearly shows the "SS" (SuperSpeed) logo on the black plastic housing of both adapters, indicating their USB 3.0 capabilities. The USB-A male connector has a blue tab, and the USB-C male connector is silver.
4. Operating Instructions
4.1 Data Synchronization
Once connected, the adapter enables data transfer between your devices at speeds up to 5 Gbps. The functionality will depend on the capabilities of the connected devices and the operating system.
- For file transfers, ensure both devices are powered on and recognized by each other.
- Follow the on-screen prompts or file management procedures specific to your operating system (e.g., Windows File Explorer, macOS Finder, Android file manager).
4.2 Charging
The adapter supports charging at up to 3A, allowing you to charge compatible devices. Charging speed may vary based on the power source and the device being charged.
- Connect the adapter to a power source (e.g., wall charger, power bank) with a USB 3.0 Type-A port.
- Connect your USB Type-C device to the adapter.
- Verify that your device indicates it is charging.
5. Maintenance
- Cleaning: Use a soft, dry cloth to clean the adapter. Avoid using liquid cleaners or solvents.
- Storage: Store the adapter in a cool, dry place away from direct sunlight and extreme temperatures.
- Handling: Avoid bending or twisting the adapter excessively. Always grasp the connector housing when plugging or unplugging to prevent damage to the pins.
- Moisture: Keep the adapter away from water and other liquids.
6. Troubleshooting
- Issue: Adapter not recognized by device.
Solution 1: Ensure both ends of the adapter are fully inserted into their respective ports. A loose connection can prevent recognition.
Solution 2: Try connecting the adapter to a different USB port on your device or a different device to rule out port issues.
Solution 3: Restart the connected devices (computer, phone) and try again.
- Issue: Slow data transfer speeds.
Solution 1: Ensure both connected devices support USB 3.0 or higher speeds. If one device is USB 2.0, the transfer speed will be limited to USB 2.0 speeds.
Solution 2: Verify that the USB port you are using on your computer or hub is a USB 3.0 port (often indicated by a blue interior or "SS" symbol).
- Issue: Device not charging or charging slowly.
Solution 1: Check the power source. Ensure it provides sufficient power for your device. Some devices require specific charging protocols.
Solution 2: Confirm that the adapter is securely connected to both the power source and the device.
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | 788394124983 |
| Connector Type | USB Type-C Male to USB 3.0 Type-A Male |
| Data Transfer Speed | Up to 5 Gbps (USB 3.1 Gen 1) |
| Charging Support | Up to 3A |
| Dimensions (L x W x H) | 1.5 x 0.61 x 0.2 inches (38 x 15.5 x 5 mm) |
| Item Weight | 0.317 ounces |
| Color | Black |
| Plug Material | Nickel plated |
| Outer Cover Material | PVC |
| Compatible Devices | Cellular Phones, PC, Mac, Laptops, DVD Players, TVs |

Image: A technical diagram illustrating the dimensions of the rgzhihuifz Type-C Male to USB3.0 Male Adapter. The diagram shows the adapter's length as 38mm and its width as 15.5mm. Text labels also confirm the product name, size, color (Black), plug material (nickel plated), outer cover (PVC), function (USB 3.0 interface adapter), and application (for mobile phones, laptops, etc.).
8. Warranty and Support
This product comes with a 24-month warranty from the date of purchase. This warranty covers manufacturing defects and issues arising from normal use.
For technical support, warranty claims, or any inquiries, please contact rgzhihuifz customer service through the retailer where the product was purchased or visit the official rgzhihuifz store page on Amazon: rgzhihuifz Store.
9. Safety Information
- Do not disassemble or attempt to repair the adapter yourself.
- Keep out of reach of children.
- Avoid exposing the adapter to extreme temperatures, humidity, or corrosive environments.
- Use only with compatible devices and within specified electrical ratings.