I’m indebted to a colleague who tells me that you can read SD cards via the USB port. You’ll need a cable such as this: http://goo.gl/GdeJG

But note the Galxaxy won’t do this natively as far as I can see. You have two choices , unlock and root your device, which I’m currently not so keen to do or purchase Nexus Media Importer by Homesoft. I can confirm this works but only on a modest sample of devices to date. Enjoy. (See cable below)

USB OTG cable with SD card reader connected