Device can not recognized - Brother HL 2140 Laser Printer

The computer is not recognizing the device because the appropriate software or driver is not installed on the device.

Most of the time when you connect a smartphone into a compatible laptop the device drivers or software automatically install, so the laptop may recognize the smartphone.

Here are some possibilities as to why the device is not recognized.

1) The USB port is bad.
2) The USB port is not activated
3) One of the devices does not support the other

Here are a few possible troubleshooting solutions:

1) Go to the smartphone manufactures website and download and install the updated device driver and software then plug in the device to see if it is recognized.
2) (if Windows OS) Go to the Device Manager to see if the device is showing up when it's plugged in. If you see the device in device manager right click the device and choose to update the driver.
3) (if Windows OS) Additionally, in device manager you can check your device's USB ports to see if there is an issue with the ports that may be resulting in the smartphone not being recognized. You can choose to re-enable the USB ports or update the software for the USB ports.

Hopes that helps resolve your issues.

Open Device Manager Windows Help

I’m happy to help further over the phone at https://www.6ya.com/expert/james_d4449ffdf318a2c3

hi Markaz.
you can try is to open Device Manager, expand USB Serial Bus Controllers, right-click on USB Root Hub and then click on Properties. Click on the Power Management tab and uncheck the Allow the computer to turn off this device to save power box.
or read up more at this link.
How to Fix USB Device Not Recognized in Windows

What do I do if my USB device is not recognized? Method 4: Reinstall USB controllers.

1. Select Start, then type device manager in the Search box, and then select Device Manager.
2. Expand Universal Serial Bus controllers. Press and hold (or right-click) a device and select Uninstall. ...
3. Once complete, restart your computer. Your USB controllers will automatically install.

Error: "USB Device not recognized" when you try to access a USB ...

https://support.microsoft.com/.../error-usb-device-not-recognized-when-you-try-to-acces... Search for: What do I do if my USB device is not recognized?

or this link.
Windows does not recognize the USB device Google Search

it is not appering in my copmuters but it is charging.

You mentioned that you uninstalled the unknown device from the Device manager. If you uninstall it then connected your usb flash drive you will see an error again on your device manager. This means that the driver for your usb port is not properly installed.

To install it, visit dell website, look for the model of your machine and locate the driver, download it then install from your machine.

This solution worked for me when I got the USB device not recognized message:
http://www.infobarrel.com/USB_Port_Repair
It can be quite frustrating. I've heard that older computers are more likely to have the USB device not recognized message.

reinstall the USB drive with USB 2.0 drivers and will work

I am sending a couple of articles to help you with troubleshooting this issue, hope this helps. USB Memory Stick not recognized by Windows 10
What to Try When Your USB Device is an Unknown Device

I’m happy to help further over the phone at https://www.6ya.com/expert/adrienne_b03fb46fc6334991

http://www.tomtom.com/support/index.php?Language=1&query=connect+to+home&FID=7375

Go into your Start Menu and right click on My Computer and choose "Properties" from the menu. Click on the Hardware tab on the new window that opened. Select Device Manager. Check to see if your device is recognized under Windows Portable Devices. If your device is not recognized here,what i would recommend you to do is to uinstall the device.

To uninstall the devid just right click on the device name and hit uninstall...the device usually listed under disk drives, portable devices and univeral serial bus controllers.. Once you uninstall the device..you will need to make sure what mode you have the device...turn the device on and click under setting and look for usb mode...then you want to make sure its under MTP mode or Auto....then what you will want to do is to plug the device on that back of the computer not the front...then windows should recognize it...if that doesnt do it you will need to contact the manufacturer of the device.
3. Open Windows Media Player and go to the Sync section. It should be recognized on the right-hand side. If it is not, or if your device has a drive letter after its name (for example F :), your device is not being properly recognized by the computer and you will have to contact the manufacturer of the device.
4. If it is seen in Windows Media Player then disconnect the Device and close all programs.
Next we are going to make sure that Windows Media Player is not storing unnecessary information about your device:

1. Open Windows Media Player.
2. Maximize the program and choose the Tools > Options menu.
3. Click on the Privacy Tab in the open window and choose "Clear Caches" and "Clear History".
4. Re-connect your device and choose "Manual" and "Permanent" on the window that opens.
5. Close Windows Media Player.

I hope that help...
Thank you
Computerrep

**Please rate accordingly...**

Go into your Start Menu and right click on My Computer and choose "Properties" from the menu. Click on the Hardware tab on the new window that opened. Select Device Manager. Check to see if your device is recognized under Windows Portable Devices. If your device is not recognized here,what i would recommend you to do is to uinstall the device.

To uninstall the devid just right click on the device name and hit uninstall...the device usually listed under disk drives, portable devices and univeral serial bus controllers.. Once you uninstall the device..you will need to make sure what mode you have the device...turn the device on and click under setting and look for usb mode...then you want to make sure its under MTP mode or Auto....then what you will want to do is to plug the device on that back of the computer not the front...then windows should recognize it...if that doesnt do it you will need to contact the manufacturer of the device.
3. Open Windows Media Player and go to the Sync section. It should be recognized on the right-hand side. If it is not, or if your device has a drive letter after its name (for example F :), your device is not being properly recognized by the computer and you will have to contact the manufacturer of the device.
4. If it is seen in Windows Media Player then disconnect the Device and close all programs.
Next we are going to make sure that Windows Media Player is not storing unnecessary information about your device:

1. Open Windows Media Player.
2. Maximize the program and choose the Tools > Options menu.
3. Click on the Privacy Tab in the open window and choose "Clear Caches" and "Clear History".
4. Re-connect your device and choose "Manual" and "Permanent" on the window that opens.
5. Close Windows Media Player.

I hope that help...
Thank you
Computerrep

**Please rate accordingly...**