Originally Posted by vegasirish
before I found the app I was using the "Connect To Folder" option under the Connect and Share tab on Calibre. I created a folder titled "Temp Ebooks" (you can name it whatever you want) in "My Documents" in Windows 7 and then sent whatever books I wanted on my device to that folder. I then copied and pasted the folder onto my Nexus 7 internal SD.
Excellent work around for Android devices that are not assigned USB drive letters.