Zuweiyu 7" Tablet Stand with USB Keyboard - Black Faux Leather Carrying Case-with Free Micro USB OTG Cable and Mini USB OTG Cable (Please note:it does NOT work for Coby Koros,Kindle fire & blackberry playbook) Fit for most of 7" tablet pc With standard USB plug built in With one free mini USB Otg adapter With one free micro USB Otg adapter With keyboard and stand