Very good!

Easy to use and does what you need it to. I can easily transfer PDF files from my pc in seconds using a regular browser, and the file is then available to read directly from the app. There appears to be much more that I havent looked at yet, such as Dropbox integration, etc. All this, and Im using it on an iPad gen 1! No compatibility issues :)

Pjmma about WiFi HD Wireless Disk Drive, v8.1