Introduction
The Satechi USB C to USB C 4.0 Pro Cable is engineered for high-performance connectivity, offering advanced capabilities for charging, data transfer, and video output. This cable is designed to provide reliable and efficient performance across a wide range of USB-C compatible devices, ensuring seamless integration into your digital workflow.
Key Features
- 8K Resolution Quality: Supports stunning 8K @ 60Hz display capabilities for single monitors and 4K @ 120Hz for single or dual displays, providing unparalleled clarity and detail for creative work, streaming, and gaming.
- 240W Power Delivery (EPR): Delivers up to 240W of power, enabling fast and efficient charging for laptops, smartphones, tablets, and other compatible devices. Compatible with Satechi wall and desktop chargers, as well as Apple power adapters.
- 40Gbps Data Transfer: Achieves ultra-fast data transfer speeds, significantly reducing transfer times for large files and improving overall productivity.
- USB-IF Certified: Rigorously tested and certified by USB-IF, guaranteeing top-notch quality, reliability, and safety, including protection against fluctuating voltage, overpower, and anti-flicker technology.
- Durable & Versatile Design: Features a robust 3.9ft (1.2m) black braided design that resists tangling, ensuring longevity and ease of storage. It is engineered for broad compatibility with USB4, Thunderbolt 3, Thunderbolt 2, and all USB 3 and USB 2 standards.
Setup
The Satechi USB C to USB C 4.0 Pro Cable is designed for plug-and-play functionality. No special drivers or software installation are required for basic operation.
- Connect to Device: Insert one end of the USB-C cable into the USB-C port of your host device (e.g., laptop, tablet, smartphone).
- Connect to Peripheral/Power Source: Insert the other end of the USB-C cable into the corresponding USB-C port of your peripheral device (e.g., external SSD, monitor) or power adapter.
Ensure both connections are secure for optimal performance.
Operating Instructions
Charging Devices
Connect the cable between your USB-C power adapter and your device (laptop, tablet, phone) to initiate charging. The cable supports up to 240W Power Delivery, allowing for rapid charging of compatible devices.

Image: Satechi USB C to USB C 4.0 Pro Cable connected to a MacBook Pro for charging, illustrating its 240W power delivery capability.
Data Transfer
Use the cable to connect devices for high-speed data transfer, such as connecting an external SSD to a computer. The 40Gbps data transfer rate ensures quick and efficient file synchronization and backups.

Image: Satechi USB C to USB C 4.0 Pro Cable facilitating data transfer between a laptop and an external SSD, highlighting its 40Gbps speed.
Video Output
Connect your device to a compatible monitor or display using the cable for video output. Enjoy 8K @ 60Hz resolution for single displays or 4K @ 120Hz for single or dual displays.

Image: A laptop connected to two external monitors via the Satechi USB C to USB C 4.0 Pro Cable, demonstrating its display capabilities.
Compatibility
This cable offers broad compatibility with a wide range of devices and standards:
- USB Standards: Fully compatible with USB4, Thunderbolt 4, Thunderbolt 3, USB-C 3.2/3.1/3.0, and USB 2.0.
- Compatible Devices: MacBook Pro 14/16-inch (2025 M5/M4/M3/M2/M1), MacBook Air 13/15-inch (2025 M5/M4/M3/M2/M1), iPad Pro 11/13-inch (2025 M5/M4/M2/M1), iPad Air 11/13-inch (2025 M3/M2/M1), iPad Mini (2024 A17/6th Gen), iPhone 17, iPhone 17 Air, iPhone 17 Pro, iPhone 17 Pro Max, iPhone 16/15 Series, Mac Mini (2024 M4/M2/M1), iMac (2024 M4/M3/M1), Mac Studio (2025 M4/M3/M2/M1), Lenovo ThinkPad, Microsoft Surface, Google Pixelbook, Google Pixel Pro 8/9, Samsung S24/Z Flip 5.

Image: The Satechi USB4 Pro Cable shown with multiple compatible devices, including a smartphone, tablet, and laptop, emphasizing its universal connectivity.
Specifications
| Brand | Satechi |
| Model Number | ST-YU4120M |
| Connector Type | USB Type C |
| Cable Type | USB |
| Data Transfer Rate | 40 Gigabits Per Second |
| Power Delivery | Up to 240 Watts |
| Maximum Voltage | 20 Volts |
| Display Resolution | 8K @ 60Hz (Single), 4K @ 120Hz (Single/Dual) |
| Cable Length | 3.9 ft (1.2 m) |
| Outer Material | Braided |
| Color | Black |
| Specification Met | USB-IF |
| Item Weight | 66 Grams (2.33 ounces) |
| Indoor/Outdoor Usage | Indoor |
Maintenance
To ensure the longevity and optimal performance of your Satechi USB C to USB C 4.0 Pro Cable, follow these maintenance guidelines:
- Storage: When not in use, coil the cable neatly and secure it with the included rubber cable tie to prevent tangling and damage.
- Cleaning: Wipe the cable with a soft, dry cloth to remove dust and debris. Avoid using harsh chemicals or abrasive materials.
- Handling: Avoid sharp bends, kinks, or excessive pulling on the cable, especially near the connectors, to prevent internal wire damage.
- Environment: Use the cable in dry, indoor environments. Avoid exposure to extreme temperatures or moisture.
Troubleshooting
If you encounter issues with your Satechi USB C to USB C 4.0 Pro Cable, consider the following:
- No Power/Slow Charging:
- Ensure both ends of the cable are securely connected.
- Verify that your power adapter is functioning correctly and provides sufficient wattage for your device.
- Test with a different power adapter or device to isolate the issue.
- No Data Transfer/Slow Speeds:
- Confirm that both connected devices support the desired data transfer speeds (e.g., 40Gbps for USB4).
- Ensure your device's ports are clean and free of obstructions.
- Try connecting to a different port on your host device or using a different peripheral.
- No Video Output/Display Issues:
- Check that your monitor and host device support the specified video resolutions and refresh rates (e.g., 8K@60Hz).
- Ensure your device's display settings are correctly configured to detect and output to the external monitor.
- Verify that the monitor is powered on and set to the correct input source.
Official Product Video
Video: An official product video from Amazon Videos showcasing the Satechi USB4 Pro Cable and its features.
Warranty and Support
Satechi products are covered by a 2-year limited warranty against defects in materials and workmanship under normal use. For customer support, technical assistance, or warranty claims, please refer to the contact information provided with your purchase or visit the official Satechi website.