Authors note: Any REASONABLY NEW laser printer supports PCL6 as a general rule (but confirm with the spec sheet!). However, some older monochrome lasers (and early low end color models, such as the CLJ CP1025) often have limited RAM (often 64MB OR LESS). This can result in "PCL personality error" pages, which clear with a power cycle.

Due to the general nature of this guide, specific languages are not covered. The HP UPD supports PCL6 and PostScript.

Find out what print languages your printer supports. The LaserJet Pro M401 series supports PCL6 and PostScript. However, PCL6 is recommended when possible.

Get your printer ready for setup. If you use USB, connect the printer now. If networked, make sure to get your printers IP address now as it will be needed later on.