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What is the model number of your tablet ? And what is the brand ? Samsung, Apple, LG etc
The USB cable you need is Micro USB to USB --> http://www.amazon.com/Micro-USB-to-Cable/dp/B004GETLY2
If you have any questions or would like any additional information, please don't hesitate to ask.
Some variant uses Mini USB to USB. I checked again and your model needs Mini USB to USB. This cable --> http://www.amazon.com/AmazonBasics-USB-2-0-Cable--Male/dp/B00NH11N5A/ref=sr_1_4?s=pc&ie=UTF8&qid=1448979332&sr=1-4&keywords=mini+usb+to+USB
You can buy this cable from any local stores or from online. The name of the cable is Mini USB to USB
It is also available on eBay, Amazon etc and you will get it for less than $5
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