Mollusk Cruzer Shells

I took a week off from snow shoveling and went shelling instead. It's easier on the back, however it's very similar to shoveling the way we've been doing it (using a net to shovel the shells from the sea). Pictured are some of my finds. From left to right: Pear Whelk, SanDisk Cruzer Micro 8GB Black, Cerith and Lettered Olive. Guess which one is backwards compatible to USB 1.1?