Windows 7 will install a generic driver so the install disk has no purpose. Belkin support was of no help when I asked if there were any problems using the W7 generic driver.
I inserted two cards (SDHC and MicroSDHC). Both were read and written to with no problems. I especially like how easy it is to remove the micro card.
It would have been nice to have Buy.com list the OS the unit supports but that could be obtained from Belkin's website.
Belkin's Universal Media Reader works with today's most popular high-capacity media cards. Easily download and transfer pictures, movies, music, and more from your digital camera, MP3 player, or other media devices.