Help my iphone won't connect to my computer?

So everything was going hoonkey dory with my iphone and connecting with my computer. Well I was prompted to update my itunes software and now when I plug in my iphone my computer makes the noise that indicates that its plugged up but it doesn't show up on my iturns or even in "my computer" nor will it charge?

Is it my iphone or the computer?

I have an iphone 4s

This has happened to me before, its most likely the cable or ths usb hole you plug it into on your computer

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