The Lexar Professional HR1 Hub is a modular four-bay card reader hub designed to accept up to four card readers. Enabling quick, USB 3.0-speed transferring of files from up to four memory cards simultaneously. The configurable structure of the hubs allows the user to insert a variety of card readers, with the ability to use a combination of SDHC/SDXC, CompactFlash, or XQD card types. With its sleek, compact design, the HR1 Hub eliminates cable clutter by only requiring one USB connection, leaving your workspace free of messes to allow you to stay focused. Lexar designed the HR1 Hub to be future-proof to accept any future card types of formats. Compatible with Mac OS X 10.6 or later and Windows 7/8 operating systems.