The DM8148 EVM comes with an SD card reader/adaptor in the box. It plugs into a USB port and accepts several different types of SD cards, MMC, and MS. If I put an SD card into that adaptor, then plug it into the eval board I can see the device in lsusb and the volume gets mounted. But, if instead I plug in a standard thumb drive.. like a Sandisk Cruzer or anything like that it does NOT show up in lsusb and does not get mounted. I thought it might be because of the Filesystem type being FAT or something, so I formatted a thumb drive to be ext3. This still doesn't make a difference.. I see nothing in dmesg indicating a problem. What could be going on here?