The Juiced System's Microsoft Surface Pro 3 Adapter was designed to specifically conform to your new Surface Pro 3 Tablet. The adapter enables 2x USB 3.0 ports, 1x Micro SD, and 1x SD card input. The adapter does NOT block or impair any ports or buttons. Empower your Surface Pro 3 Tablet more than ever, with the Juiced Systems Microsoft Surface Pro 3 Adapter.