To start scanning without a wire, make sure your computer and your ScanSnap iX500 are connected. The update to ScanSnap Manager should be pushed to your computer if it is running on your computer and your scanner is on/open. Otherwise, run the ScanSnap Manager updater to get the latest version of the software, or just get it here. The updater will also update your scanner’s firmware.
When the update finishes and the ScanSnap Manager restarts, it will ask if you want to set up wireless scanning. Click OK, click through the prompts, and that’s it. It actually is that simple. Unplug your USB and store it; you won’t be needing it anymore!
From now on, you can use your ScanSnap just as you always have; you just won’t need a wire. This will save a lot of hassle if you use a laptop, in particular. It’s less useful for my desktop, but I’m unplugging the cord, anyway. I’m always up for reducing clutter.