Not only that, but vendors nowadays figured out that they can embed a flash chip with Windows drivers in the device. When you first plug it in it shows up as a

Not only that, but vendors nowadays figured out that they can embed a flash chip with Windows drivers in the device. When you first plug it in it shows up as a disk drive that autoplays the driver setup then ejects the storage device and that's when the actual endpoint is connected which can be handled by the newly installed drivers and UI software. Of course, autoplay has its own obvious drawbacks.