Unknown USB device Port reset failed

1. Turn on USB debugging in your phone
Go to "Settings", "Application", "development" check "USB Debugger". This allows the device to be recognized by the PC when it is connected via USB.

2. Install the driver
To connect your Android phone to your PC you need to install a driver, the tutorial is available in 2 ways: one is to manually install the System trial drive, the other is to use the Pea Pod 91 mobile phone Assistant automatically install the driver.
Right click on my Computer (computer) and select Device Manager. Find out if a device with a yellow question mark appears (for example). If not found, the note may have been installed with the ADB driver,

Go to the next step. Right-click on the device with the yellow question mark and select "Update Driver". After pop-up click "Next", select "Browse computer to find driver" Select Desktop G7_new_toolsdriversadb_driver directory,

That is, we store the directory of the Brush pack. Click OK to start updating the driver. When any warning box pops up, click "Confirm".

3. Insufficient power to the USB port of the mobile phone
Mobile phone USB Interface power is not enough to first put the phone battery fully charged to connect the computer, but this is too inconvenient. Let the phone in the instant connected to the computer USB interface power supply is not less than the phone's electricity consumption,

In this moment it should be "the USB interface is fully powered". USB power Supply We can not change, so can only change the phone's electricity consumption, we could turn off the phone process, leaving the system off

Key process, turn off the screen, and then connect the computer. Although there is no guarantee of success every time, but sometimes we reconnect to the computer will certainly succeed, as to whether this is the reason for a matter of opinion.

4. No Data mode selected
Many phones connected to the computer will have the choice of connection mode, usually MTP (media connection) and large-capacity connection. We want to connect to the PC for the update, management and download of mobile software, generally choose MTP

, if it is a simple disk management, the storage data will choose a high-capacity connection.

5. Plug directly into the USB port on the chassis, not the USB cable
Summarize:
Mobile phone connection to the PC problem should not be simple above the list of the few items, the actual life of the author has encountered problems can not be solved, but the simplest way is to re-install mobile phone management software, in general this case is still can

To succeed, the openness of Android has led to problems becoming complex.

Unknown USB device Port reset failed