I have an Alcatel One Touch 909B. Whenever I plug the USB into my mac, my computer does not recognize it. I unplug the USB, and suddenly my mac just shuts off. I have to restart it. If I plug then unp

card reader and hub are damaged

download an app for it

u need to download the driver to your computer in order for you computer to recognize your phone. here is 3 links for the drivers one of them is your driver, hope this helps!!

Http://www.nodevice.com/driver/MOTOS.../get39407.html - Motorola SLVR L7e USB Driver http://www.nodevice.com/driver/MOTO_.../get39406.html - Motorola SLVR L7i USB Driver
http://www.nodevice.com/driver/MOTO_.../get39388.html - Motorola SLVR L7 USB Driver

remove the drivers you have for the usb and re install them

Probably not the right answer for your problem. Mine is an external 1 TB Simple Drive. Mine wouldn't respond at all. I unplugged the power cable from the back of the hard drive and replugged it in and instantly it worked. I had tried rebooting the computer, plugging/unplugging over and over into the computer and that didn't work.

Try unplugging both the power and data cables from both the computer and the hard drive. Let the hard drive spin down. Plug the cables back in. It should become visible with no loss of files.

if you run vista it will not recognise the drivers, you will need to download an update from HTC or from your mobile operator.
faling that check microsoft vista website for mobile device software- vista does not use active sync

Well, it’s a super simple solution! No need to edit the registry, uninstall drivers, or anything of that sort.
Simply UNPLUG YOUR COMPUTER FROM THE POWER SUPPLY
Yes that’s it! Note that this does not mean just turning off your computer because modern computers don’t really turn off when you press the power button as the motherboard still gets power.


First to explain, the motherboard is where all of hardware of the computer is connected to, including the USB ports. Sometimes the motherboard needs to be “rebooted” also because something can go wrong, i.e. all your USB ports suddenly stop working. The small microprocessor on the motherboard will reload the drivers and your USB ports should be back to recognizing all devices!
So first turn off your computer using Shut Down or pressing the power button and then UNPLUG it from the wall outlet. Let it sit for about a minute and then plug it back in.
Hope this helps someone fix that pesky “USB device not recognized” Windows error!

P.S. if it is a laptop, power up the laptop with just the batteries, not plugged in to fix this issue.

Give this a try and come back to tell us if it worked or not.

currently there is no driver for mac osx :-(