How to fly a USB flash drive: technical analysis and operation guide
Recently, discussions about U disk repair and flying cable technology have become increasingly popular in the technology circle and DIY enthusiast communities. As a hardware repair method, flying cables can save U disks that cannot be used normally due to damaged interfaces or circuit failures. This article will combine the hot technical topics of the entire network within 10 days, analyze in detail the principle, tool preparation and operation steps of the USB flash drive cable, and provide structured data to assist understanding.
1. Correlation analysis of popular technical topics

In the past 10 days, the search volume of the following hardware repair topics has increased significantly:
| keywords | Search volume increase | Related platforms |
|---|---|---|
| U disk circuit board repair | 120% | Station B/Zhihu |
| Flying wire welding skills | 85% | electronic forum |
| USB interface repair | 67% | YouTube/Douyin |
2. Core preparation for flying line operation
The following tools and materials are required to successfully fly the line:
| Tool type | specific items | Function description |
|---|---|---|
| welding tools | Soldering iron (30W), solder wire | Connect flying leads and pads |
| Testing equipment | Multimeter, magnifying glass | Line continuity test |
| Auxiliary materials | Enameled wire (0.1mm), insulating glue | Replace damaged line |
Three or five-step flying line practical operation process
1.Troubleshooting: Use a multimeter to detect the path status of the 4 pins of the USB interface (VCC, D-, D+, GND) and the main control chip.
2.Route planning: Record the disconnection position and mark the flying line path with a colored pen to avoid cross interference.
3.welding operations: Connect in this data order:
| Pin type | Fly line color suggestions | target pad |
|---|---|---|
| VCC(5V) | red | Main control power supply point |
| Data cable (D+) | green | Chip labeling DP |
| Data cable (D-) | white | Chip labeling DM |
| Ground(GND) | black | Onboard grounding area |
4.Insulation treatment: Use UV glue or hot melt glue to fix the flying wires to avoid short circuit.
5.Functional testing: After plugging it into the computer, check the device recognition status through the disk management tool.
4. References to recent hot cases
In the video "Resurrection of Scrap U Disks at Zero Cost" released by a certain technology UP master "Hardcore Dismantling", headphone cables were used instead of special flying cables, and received 500,000 views in 3 days. The key operational data are as follows:
| Operation link | Time consuming | success rate |
|---|---|---|
| Breakpoint location | 2 minutes and 15 seconds | 92% |
| Flying wire welding | 4 minutes and 30 seconds | 87% |
| data recovery | 3 minutes | 100% |
5. Things to note
1. Anti-static measures: Touch metal objects to release static electricity before operation to avoid breakdown of the chip.
2. Power control: The welding temperature is recommended to be maintained at 300-350°C, and single point contact should not exceed 3 seconds.
3. Legal reminder: Flying cable repair is limited to self-use equipment. It is recommended that commercial USB flash drives be returned to the factory for repair.
Through the structured guidance of this article and in line with recent hot technology trends, even novices can complete basic flying line operations. However, it should be noted that damage to the complex main control chip still requires professional equipment to repair.
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