[PolloLoco]

There's a thread on XDA developers titled "USB Host". Apparently, the Touch Pro service manual claims the possibility of using a Touch Pro as a USB host - and one software company is selling drivers. However, there have been MANY failures - including people who added powered cables. Only one person claimed that their touch pro was able to connect a hard drive - but then disappeared when asked for proof.

I suspect we'll be forever disappointed on this topic. Until other manufacturers provide this at least.