USB2.0, full speed and high speed relationships _ Application Tips

Today, my friend asked me for a U disk, I think of his computer a little problem, so I want to copy a few documents to his home to repair the computer.
When copying files, it feels like the speed of file writing is not fast. There was suspicion, so the use of "U disk Detector" detected. Found himself fooled by the big box.
The following figure is the result of the detection.

Some people may not understand, above is not plainly written USB2.0?
In fact, you may not know that in the latest version of the USB 2.0 interface standard, USB 1.1 has been said to exist, collectively known as USB 2.0. (I don't know what the people who set these standards think).
To sum up briefly, the new standard is this:
First: low-speed, transmission rate 10kbps~100kbps (max 1.5Mbps), for keyboard mouse and game peripherals.
Second: full-speed, transmission rate 500kbps~10mbps (max 12Mbps), for broadband, audio and headset.
Third: high-speed, transmission rate 25mbps~400mbps (max 480Mbps), for video, storage, photo and broadband.
That is, the past USB 1.1 has been renamed USB 2.0 Full-speed (full speed version), while USB 2.0 is renamed USB 2.0 high-speed (high Speed edition).
Now understand, I bought this is a USB 2.0 full-speed, which is equivalent to the previous USB1.1, it is no wonder that the copy file when the feeling is not the same. If it is 128M below the U disk, USB full speed version and high-speed version of the difference is not small, but 2G u disk is used to copy large files The full speed version (which is actually slow) is hard to accept.

So I called the boss and he was surprised. (also do not know is really surprised or false surprise, but the boss should not deceive me ~ ~).
Anyway, I changed the other one. Tsinghua Tongfang. The following figure is the test result.

If you buy a U disk, you may also encounter me such a situation oh. Two words to sum up:
One:
Buy u disk or MP3 please bring tools: U disk detector.
This tool is very good, here to the author grandly sell!
Download Address:
http://www.wbj3000.com/

Two: cheap no good goods ....
Haha, a cliché, even Marx said so ... Don't believe you can look at the value of the law that his old man wrote.