I can not simply connect or my Onda tablet or on any smartphones (Acer and Alcatel) than I have at home. OTG cable so it is completely useless to me. I can however assure you that although I try plugging it into a micro USB slot. I also bought a USB micro-B / USB cable brand "amazon basics" that it fits perfectly in the same location of the devices mentioned above. So I compared the two micro USB end caps. I found that the startech OTG cable to a slot (hole) inner slightly smaller than the amazon cable and that of the original cable my tablet (the last two with perfectly identical caps). Are there different formats of USB micro-B? Apparently so! I therefore advise you to check the compatibility of your device with this product from the vendor or directly from the manufacturer. This feature was not mentioned in the product description. I am very disappointed, this product is relatively expensive compared to other cables of this size.