They aren't reversible, so a USB-A connector plugs into the port only when oriented correctly. Type USB-A ports are commonly called USB, USB 2, or USB 3 ports, depending on the USB specification they support. On Mac computers, USB is available with these ports, depending on your Mac model: USB-A It's available with many types of ports, and each type has a unique shape. USB (Universal Serial Bus) is an industry standard for connecting computers and other devices. You need the driver only if you are developing on Windows and want to connect a Samsung Android device to your development environment over USB. SAMSUNGUSBDriverforMobilePhones.exe The USB Driver for Windows is available for download on this page. Installation and usage guide of the new generic USB DAC driver for FiiO players & DAC.pdf 끂 46257 965.21 KB SAMSUNGUSBDriverforMobilePhones1590.exe.