Introducing the world's smallest USB-C to USB-A adapter. Use it to charge up your phone and other standard USB devices or transfer data at USB 3.0 SuperSpeed (up to 5Gbps). Made out of durable aluminum alloy, the mini adapter comes in 3 colors to match the new MacBook 12-inch. It's also compatible with the Chromebook Pixel and other USB-C devices (OnePlus 3 incompatible). For optimal use, use the mini adapter with an uncovered laptop. If your MacBook is covered by a case, the mini adapter may not plug in properly. Do push the adapter hard to the end when you hear the click. Not for micro USB port or mini USB port.