23-in-1 USB 2.0 Card Reader/Writer (Silver/Black) 23-in-1 USB 2.0 Card Reader/Writer General Features: Silver and Black design Four sockets supports up to 23 flash memory cards USB 2.0 compliant (built-in USB cable) USB Powered Data transfer rates up to 480 Mbps Auto-detects card type when inserted Slot to slot read/write operation Windows and Macintosh compatible Driverless (except windows 98) Plug and Play