It's the 2110 for which there is a shortage of stock currently, not the entire voyager range. We have been expecting another batch to arrive shortly so hopefully it's only been a short lived issue.
The machine may have already had the drivers and installed them in the background. You don't say whether it was a mac or PC though.
The only problem that could happen with a mac on a ethernet router is if the web interface for configuring the router requires internet explorer. Once up and running it should have no problems.