Pros: I've only used the USB port once and that was to verify that I had connected everything correctly. I needed it to read SD cards. Works very nicely with Kubuntu Linux.

Cons: None really.

Overall Review: I got tired of looking for my small external USB card reader whenever I needed it. I don't anticipate using this very often. It's occasional. I don't have a cable for my daughters' Nikon point & shoot. And sometimes the battery for my Canon T2i needs charging & I transfer the pix using the card reader/writer.