Transfer from PC to Thumbdrive Wirelessly

Im wanting to know how to transfer items from my PC to the thumbdrive wirelessly.  I dont have any USB’s that work on my computer and im trying to get the content off of my computer.  I am able to look at the contents of the wireless thumbdrive via typing in the URL for the thumbdrive…but its read only and i need to be able to write.  Please advise how to do this.

Unfortunately the web interface does not support upload.