1. Product Overview
The SSK FD003 128GB Dual USB Flash Drive is a versatile and portable storage solution designed for seamless data transfer between a wide range of devices. Featuring both USB-C and USB-A 3.2 connectors, it offers broad compatibility with modern smartphones, tablets, computers, and other USB-enabled devices. Its compact design, robust zinc alloy casing, and enhanced durability features make it an ideal choice for on-the-go data management.

Figure 1.1: The SSK FD003 Dual USB Flash Drive, showcasing its compact design and dual connectors.
Key Features:
- Dual Connectivity: Equipped with both USB-C and USB-A 3.2 connectors for universal compatibility across various devices.
- High-Speed Performance: Offers read speeds of up to 240MB/s and write speeds typically ranging from 40-135MB/s, enabling quick data transfers.
- Durable Design: Constructed with a robust zinc alloy shell for excellent heat dissipation and features UDP encapsulation for enhanced water, dust, and drop resistance.
- Portable and Convenient: Measuring 41×12.2×7.6mm with a built-in keyring, it's designed for easy portability.
- 360° Rotatable Cap: The rotatable design with a detent mechanism allows the cap to be fixed at 90° or 180° angles, protecting the connectors.
- Wide Compatibility: Pre-formatted in exFAT for compatibility with Windows, MacOS, Linux, Android, iPadOS, and iOS devices.

Figure 1.2: Visual representation of the flash drive's key features, including speed, dual ports, rotatable cap, and durable casing.
2. Setup Guide
The SSK FD003 Flash Drive is designed for plug-and-play functionality, requiring no special drivers or software installation for most operating systems. Follow these simple steps to begin using your device.
2.1 Connecting to Devices
- Identify the Correct Port: Determine whether your device (smartphone, tablet, laptop, desktop) has a USB-C port or a traditional USB-A port.
- Select the Appropriate Connector: The SSK FD003 features both a USB-C connector and a USB-A connector. Rotate the zinc alloy casing to expose the desired connector. The 360° rotatable cap allows you to securely position the active connector.
- Insert the Flash Drive: Gently insert the selected connector into the corresponding port on your device. Ensure it is fully seated.
- Device Recognition: Your device should automatically recognize the flash drive. On computers, it will typically appear as a removable disk drive. On mobile devices, you may receive a notification or need to access a file manager application.

Figure 2.1: The flash drive connected to both a smartphone via USB-C and a laptop via USB-A, demonstrating its dual-head functionality.

Figure 2.2: The flash drive in use with a tablet and a phone, highlighting its versatility for mobile devices.
2.2 Initial Formatting (Optional)
The drive comes pre-formatted in exFAT for broad compatibility. You generally do not need to reformat it. However, if you wish to use a different file system (e.g., NTFS for Windows-specific large files, or HFS+ for macOS-specific use), you can reformat the drive using your operating system's disk utility. Warning: Reformatting will erase all data on the drive. Back up any important files before proceeding.
3. Operation
Once connected, the SSK FD003 Flash Drive functions like any standard external storage device. You can drag and drop files, copy and paste, or use your device's file management tools to interact with the drive.
3.1 Data Transfer
- Copying Files To/From the Drive:
- On Computers (Windows/macOS/Linux): Open File Explorer (Windows) or Finder (macOS), navigate to the flash drive, and drag and drop files or folders between your computer's storage and the flash drive.
- On Mobile Devices (Android/iOS with OTG support): Use your device's built-in file manager app (e.g., "Files" on iOS, "My Files" on Android) to browse the flash drive and transfer content.
- Transfer Speeds: The drive supports USB 3.2 Gen 1 speeds, with read speeds up to 240MB/s. Write speeds vary based on file size, number of files, and usage conditions, typically ranging from 40-135MB/s. For optimal performance, connect to a USB 3.0/3.1/3.2 port.

Figure 3.1: Performance metrics showing read and write speeds when connected to USB 3.2/USB-C 3.1 and USB 2.0 ports.
3.2 Safe Removal
Always safely eject the flash drive from your computer or mobile device before physically removing it to prevent data corruption.
- Windows: Right-click the drive icon in "This PC" or the system tray, then select "Eject".
- macOS: Drag the drive icon to the Trash, or click the Eject button next to the drive name in Finder.
- Android: Go to Storage settings, find the USB drive, and tap "Eject" or "Unmount".
- iOS: Once you close the Files app or navigate away from the drive, it is generally safe to remove.
3.3 Saving Phone Storage Space
The SSK FD003 can be used to offload photos, videos, and documents from your smartphone or tablet, freeing up valuable internal storage. Simply transfer files from your device to the flash drive.

Figure 3.2: A user viewing content on a smartphone while the flash drive is connected, illustrating its use for expanding mobile storage.
4. Maintenance and Care
To ensure the longevity and optimal performance of your SSK FD003 Flash Drive, follow these maintenance guidelines:
- Physical Protection: The drive features UDP encapsulation, providing enhanced water, dust, and drop resistance. While robust, avoid prolonged submersion in water or exposure to extreme physical impacts.
- Heat Dissipation: The zinc alloy shell is designed for excellent heat dissipation. Ensure the drive is not covered or placed in environments that could trap heat during extended use.
- Connector Care: Keep the USB-C and USB-A connectors clean and free of debris. Use the rotatable cap to protect the inactive connector when not in use.
- Storage: When not in use, store the flash drive in a cool, dry place away from direct sunlight and strong magnetic fields. The built-in keyring allows for secure attachment to keys or bags, reducing the risk of loss.

Figure 4.1: The flash drive demonstrating its water resistance, highlighting its durable construction.

Figure 4.2: Visual representation of the flash drive's heat dissipation capabilities, ensuring stable operation.
5. Troubleshooting
If you encounter issues with your SSK FD003 Flash Drive, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Drive not recognized by device. | Incorrect port, loose connection, incompatible file system, or driver issue. |
|
| Slow transfer speeds. | Connected to a USB 2.0 port, large number of small files, or background processes. |
|
| "Disk is write-protected" error. | Drive is set to read-only, or file system corruption. |
|
| Capacity displayed is less than 128GB. | Binary calculation difference (common for storage devices). | This is normal. Operating systems calculate storage in binary (1GB = 1024MB), while manufacturers use decimal (1GB = 1000MB). A 128GB drive typically shows around 116GB on Windows. This does not affect the actual physical storage. |
5.1 Official Product Video
For a visual guide on the features and usage of the SSK Dual Head Flash Drive, please watch the official product video below.
Video 5.1: Official SSK video demonstrating the 240MB/s Dual Head Flash Drive's features and compatibility.
6. Technical Specifications
| Feature | Detail |
|---|---|
| Brand | SSK |
| Model Name | FD003/128GB |
| Memory Storage Capacity | 128 GB |
| Flash Memory Type | USB |
| Hardware Interface | USB 3.2 Gen 1 |
| Hardware Connectivity Technology | USB Type A, USB Type C |
| Read Speed | Up to 240 MB/s |
| Write Speed | Typically 40-135 MB/s (up to 155 MB/s) |
| Color | Silver |
| Product Dimensions (LxWxH) | 1.6 x 0.48 x 0.04 inches (41 x 12.2 x 7.6 mm) |
| Item Weight | 0.705 ounces |
| Special Features | Dual USB Connector, Dust Resistant, Lightweight, Shockproof, Water Resistant, 360° Rotatable Cap |
| Compatible Phone Models | Android OTG, iPhone 15/16 Pro |
| Manufacturer | SSK Corporation |

Figure 6.1: Detailed dimensions of the SSK FD003 Flash Drive.

Figure 6.2: Illustration of the 360° rotatable cap design, allowing for secure positioning of the connectors.
7. Warranty and Support
7.1 Warranty Information
SSK products are manufactured to high-quality standards. For specific warranty terms and conditions applicable to your SSK FD003 Flash Drive, please refer to the warranty card included with your product packaging or visit the official SSK website. Typically, SSK offers a limited warranty covering manufacturing defects.
7.2 Customer Support
If you require technical assistance, have questions about product functionality, or need to report an issue, please contact SSK customer support through the following channels:
- Official Website: Visit the SSK official website for FAQs, driver downloads (if applicable), and support contact information.
- Email Support: Refer to your product packaging or the SSK website for the dedicated customer support email address.
- Online Resources: Additional user guides and support documents may be available on the SSK product page or support portal.
You can also refer to the official user manual PDF provided by Amazon for more detailed instructions: SSK FD003 User Manual (PDF)





