We looked at several printers and the main thing we needed was a bypass tray to print checks on demand. The printer we have been using (an HP P1505n) is 14+ years old and is on its way out. While the product pics don't show it, there is a pull down bypass tray on this printer.
We unboxed it, connected power and a network cable, and ran the install. Voila! Could not have been easier.
Technology has come a long way since we bought the last printer and this HP 4100dn is smooth, fast, and quiet. And the auto-duplex function is really nice.
We replaced a HP Laserjet 401dne when it reported paper jam that could note be fixed with the 4001dn. The new Laserjet is faster, also has double sided printing, and is straightforward in its operation. Installation was simple with connecting the power cord and the Cat 5 computer cable. The printers was rapidly recognized and the installation software quickly downloaded. Next is to see if it will also last 10 years as the HP 401dne printer did.
I bought this as a replacement for my old 1020, mainly because of price. I love having two paper trays, and the ability to load the large one with a good number of sheets. On the minus side, it is noisier than the 1020 and slower in getting ready: it takes about 18 seconds for the printing to start.