Card reader issue

I have got Card reader Soyntec Nexoos 552 (http://www.soyntec.com/es-en/item/nexoos_552_black#1).When I first plugged it in mass storage installed successfully but software installation failed!User manual says it doesn't need driver to work on Windows 7.Actually the mass storage device icon is appeared in the devices and printers window but there is no drive of my micro SDHC -plugged in the...