1. Introduction
This instruction manual provides comprehensive guidance for the UGREEN USB-C to Micro-B and USB-A to Micro-B cables. These cables are designed for high-speed data transfer, synchronization, and charging of compatible devices, including external hard drives, SSDs, smartphones, and tablets. Please read this manual carefully to ensure proper usage and optimal performance.
2. Product Overview
The UGREEN USB cables offer robust connectivity solutions with advanced features:
- High-Speed Data Transfer: Supports up to 10Gbps (USB 3.1 Gen 2) for the USB-C to Micro-B cable, and up to 5Gbps (USB 3.0) for the USB-A to Micro-B cable, enabling rapid file transfers.
- Durable Construction: Features a braided shield, aluminum alloy connectors, and 22AWG copper wire for enhanced durability and signal integrity. Designed to withstand over 40,000 bending tests.
- Charging Capability: Provides reliable charging for compatible devices, such as Samsung smartphones and tablets equipped with a USB 3.0 Micro-B port.
- Wide Compatibility: Connects various devices including external hard drives, SSDs, laptops (MacBook, Dell XPS), tablets (iPad Pro), and smartphones (Samsung Galaxy, OnePlus).

Figure 1: UGREEN USB-C to Micro-B Cable. This image shows the braided cable with silver-colored USB-C and Micro-B connectors, both featuring the UGREEN logo.

Figure 2: UGREEN USB-A to Micro-B Cable. This image displays the black cable with a blue-tipped USB-A connector and a Micro-B connector, both bearing the UGREEN brand.
3. Setup and Connection
Connecting your UGREEN cable is straightforward. Follow these steps to establish a connection for data transfer or charging:
- Identify Ports: Determine the correct ports on your host device (e.g., computer, laptop, charger) and the target device (e.g., external hard drive, smartphone).
- Connect Host Device: Insert the USB-C or USB-A end of the cable into the corresponding port on your host device.
- Connect Target Device: Insert the Micro-B end of the cable into the Micro-B port on your target device. Ensure a secure connection.
- Verify Connection: For data transfer, your operating system should recognize the connected device. For charging, the device's charging indicator should activate.

Figure 3: Example of connecting an external hard drive to a laptop using a UGREEN cable for data transfer. The image illustrates a laptop screen displaying a file transfer progress window, with the cable connecting the laptop to a UGREEN external hard drive.
4. Operating Instructions
4.1 Data Transfer
Once connected, your devices are ready for data transfer. The cable supports high-speed data rates:
- USB-C to Micro-B Cable: Up to 10Gbps (USB 3.1 Gen 2). Ideal for transferring large files quickly from Solid State Drives (SSDs) or other high-speed storage devices.
- USB-A to Micro-B Cable: Up to 5Gbps (USB 3.0). Suitable for transferring files from portable external hard drives.
To transfer files, simply drag and drop them between the recognized devices on your computer's file explorer or finder.

Figure 4: Illustration of data transfer speeds, showing USB 3.1 achieving up to 10Gbps compared to USB 3.0's 5Gbps. The image features the USB-C to Micro-B cable.
4.2 Charging
The Micro USB 3.0 cable can also charge compatible Samsung smartphones or tablets. Connect the USB-A end to a power source (e.g., wall adapter, computer USB port) and the Micro-B end to your device. Charging speed depends on the power source and device capabilities.

Figure 5: Depiction of fast charging for a Samsung Galaxy Note3, indicating 5V/2A fast charging and data synchronization. The image shows a smartphone connected to a UGREEN cable, with a battery icon showing charging progress.
5. Compatibility
These UGREEN cables offer broad compatibility with various devices:
- USB-C Host Devices: MacBook Pro/Air, iMac, iPad Pro, Dell XPS 13/15, Google Chromebook Pixel, HP Pavilion X2, Yoga 910, and other devices with a USB Type-C port.
- Micro-B Target Devices: Portable external USB 3.0 hard drives, hard drive enclosures, Samsung Galaxy S22/S20/S10/S9/S8/Note20/Note10/Note9/Note8, OnePlus 6/6T/5/5T/3, and other smartphones or tablets equipped with a USB 3.0 Micro-B port.

Figure 6: Visual guide to wide compatibility, showing various devices compatible with USB-C (Macbook, Laptop, iPad, Phones, Hub) and Micro-B (External Hard Drive, Hard Drive Enclosure, Camera, Smartphone, Tablet) connectors.
6. Specifications
| Feature | Detail |
|---|---|
| Brand | UGREEN |
| Model Number | UGREEN-USB31-MicroB-C |
| Connector Type (Cable 1) | USB Type-C to Micro-B |
| Connector Type (Cable 2) | USB Type-A to Micro-B |
| Data Transfer Rate | Up to 10 Gbps (USB 3.1 Gen 2 for USB-C to Micro-B), Up to 5 Gbps (USB 3.0 for USB-A to Micro-B) |
| Cable Type | USB |
| Color | Black |
| Connector Gender | Male-to-Male |
| Wire Gauge | 22AWG Copper Wire |
| Durability | 40,000+ bending tests, braided shield, aluminum alloy connectors |
7. Maintenance
To ensure the longevity and optimal performance of your UGREEN cables, follow these maintenance guidelines:
- Storage: Store cables in a cool, dry place away from direct sunlight and extreme temperatures. Avoid tightly coiling or bending the cable at sharp angles.
- Cleaning: Gently wipe the cable and connectors with a soft, dry, lint-free cloth. Do not use liquid cleaners or abrasive materials.
- Handling: Always grasp the connector head when plugging or unplugging the cable, rather than pulling on the cable itself, to prevent damage to the internal wires.
- Inspection: Periodically inspect the cable for any signs of wear, fraying, or damage to the connectors. Discontinue use if damage is observed.
8. Troubleshooting
If you encounter issues with your UGREEN cables, refer to the following common troubleshooting steps:
- Device Not Recognized:
- Ensure both ends of the cable are securely connected to their respective ports.
- Try connecting the cable to a different USB port on your host device.
- Test the cable with another compatible device to rule out a device-specific issue.
- Restart your computer or host device.
- Slow Data Transfer Speed:
- Verify that both your host device and target device support USB 3.0 or USB 3.1 speeds. Older USB 2.0 ports will limit transfer rates.
- Ensure no other high-bandwidth operations are running in the background.
- Check if the cable is fully inserted and not loose.
- Device Not Charging:
- Confirm that your power source (e.g., wall adapter) is functioning correctly and provides sufficient power.
- Ensure your device's Micro-B port is clean and free of debris.
- Test with a different charging cable or power adapter if available.
- Physical Damage:
- Inspect the cable and connectors for any visible damage. If damaged, discontinue use and replace the cable.
9. Warranty and Support
UGREEN products are designed for reliability and performance. For warranty information, technical support, or further assistance, please visit the official UGREEN website or contact their customer service directly. Keep your purchase receipt for warranty claims.
Official UGREEN Website: www.ugreen.com





