Print jobs spool to either printer memory or the computer memory. If the job uses the computer memory performance of further use can be effected until the print job is finished. A USB port is being added to newer printers. The one advantage to a USB printer is that up to 96 USB devices can be added to your computers without the need for hardware resource configuration. If you have a lot of devices or want more than one printer this would be the way to go.
Performance is generally better, too.
Printer Languages Printer languages are commands from the computer to the printer to tell the printer how to format the document being printed. These commands manage font size, graphics, compression of data sent to the printer, color, etc. Postscript is a printer language that uses English phrases and programmatic constructions to describe the appearance of a printed page to the printer. This printer language was developed by Adobe in 1985. It introduced new features such as outline fonts and vector graphics.