So I have an opportunity to pick an HP 4500 Laserjet for a pretty good price and am on the fence. The only problem is that it currently only has a parallel connection on it. However, the seller claims that it can accept a JetDirect upgrade card to make it network ready. I did a bit of browsing on ebay and found quite a few of these cards available.
My question: What's involved with installing one of these cards and configuring them correctly?