The Motorola USB SD Card Reader is a single slot, hi-speed reader and writer that connects to your Computer's USB 2.0 port. It is the ideal way to carry around, download and upload valuable data via USB high-speed transfer rate of up to 480Mb/sec. Transfer pictures, music, and data between your SD Card, TransFlashâ„¢ or miniSD card (with SD Adapter)* and devices such as cellular phone, PDA or computer. This USB 2.0 reader will work with all existing USB ports, but get the faster read write speed with the new USB 2.0 port.