I have the "Micro-USB plug to USB" bought for my phone and my tablet PC. So I can connect over a USB flash drive and thus have additional music, data, etc. at your fingertips. The adapter is supplied by both my phone and tablet PC recognized immediately and with power. The transmission from the connected USB flash drive (I have a 32 GB USB stick is connected) runs smoothly and without interruptions.
But what should I pay attention, the adapter is not 20 cm long but only 13 cm.
I let my adapter via Amazon Marketplace directly send from America. For the cheap price, I could wait and discounts for 2 weeks later.