Motorola OEM USB SD Card Reader is a single slot, hi-speed reader and writer that connects to your computers USB 2.0 port. SD Card, miniSD card (with SD Adapter)* and microSD card (with SD Adapter)* 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. Plug and play with Windows XP, 2000 and ME, MAC 8.6 OS and later. Windows 98SE (driver) is required.