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Instruction Manual — USB4™ Pro Cable - 1.2M

This manual covers setup and features for the Satechi USB4™ Pro Cable - 1.2M (Model: ST-YU4120M).

📄 Download User Manual — USB4™ Pro Cable - 1.2M · PDF · 1.5 MB

In the Box

USB4™ Pro Cable - 1.2M, User Manual.

Specifications

Model: ST-YU4120M
Length: 1.2 meters
Connector Type: USB-C to USB-C
Data Transfer Speed: 40Gbps
Max Power Delivery: Up to 240W (Extended Power Range)
Video Output: Up to 8K/60Hz or 4K/120Hz on single external monitor
Certification: USB-IF Certified
Compatibility: Downward compatible with Thunderbolt 4, Thunderbolt 3, USB 3.2/3.1/3.0/2.0

Parts Reference

1. USB4 Connectors (40Gbps / 240W / 8K/60Hz) — USB-C connector at each end of the cable. One end connects to your host device (laptop, computer, or USB-C power source); the other connects to your peripheral, display, or device being charged.
2. Durable Braided Cable — The premium braided cable body, designed for durability and flexibility.

Setup

Step 1: Connect one end of the cable to your device (laptop, computer, or USB-C PD power adapter).
Step 2: Connect the other end to the peripheral, monitor, or device you want to power, charge, or transfer data to.
Step 3: If connecting to an external display, ensure your monitor's input is set to the correct HDMI or DisplayPort/Alt Mode source.

Important Notes

Power delivery: Host device USB4 port must support Power Delivery 3.1 protocol to reach wattages up to 240W.

Video output: Video output up to 8K/60Hz or 4K/120Hz on a single external monitor. Not all host devices support 8K — requires a compatible GPU and 8K-capable display.

Backward compatible: Downward compatible with Thunderbolt 4, Thunderbolt 3, USB 3.2/3.1/3.0/2.0. Full speed requires both ends to support USB-IF Certified.

Frequently Asked Questions

Can this cable charge a laptop?
Yes. This cable supports up to Up to 240W (Extended Power Range) USB Power Delivery. Both your power adapter and laptop must support the required wattage for maximum charging speed.

Can I connect an external monitor with this cable?
Yes. This cable supports video output: Up to 8K/60Hz or 4K/120Hz on single external monitor. Your host computer must have a compatible GPU and display output.

Does this work with older USB-C devices?
Yes. Downward compatible with Thunderbolt 4, Thunderbolt 3, USB 3.2/3.1/3.0/2.0.

Safety Instructions

Warning: Fire, electric shock, or damage could occur if the following instructions are not obeyed.

1. Do not bend, kink, or pinch the cable sharply.
2. Keep away from liquids and moisture.
3. Do not use if the cable or connectors are damaged or frayed.
4. Do not force connectors — ensure correct alignment before inserting.

Need Help?

Contact Satechi Support at support.satechi.com or email support@satechi.com.
Phone: +1 858 268 1800 | Website: www.satechi.com