I have a Micro USB charger ordered 3.0 and then realized that I need a 2.0, so I contacted the seller for a cancellation. This has friendly and responded promptly and meant I should simply return the item. Get I then but a "false charger" just a Miicro USB 2.0, I could actually need. The seller was pleased that his mistake has led to that I keep the charger ;-) The Samsung 2.0 micro USB charger transmits properly.