The HP LaserJet 4050 Series replaced the best-in-class HP LaserJet 4000 Series printers offering increased printing and networking performance, increased printer versatility, and lower total cost of ownership. See specification table below. Printing and networking performance is boosted by the 133-MHz processor, twice the standard memory in both the base and network models, and a 10/100Base-TX HP JetDirect internal print server for faster network throughput. HP LaserJet 4050 Series printers offer a versatile, expandable design to accommodate general office or specialized printing needs today or in the future. What's more, new security, management, and convenience features deliver a level of usability and manageability that was once available only with more expensive department-level HP LaserJet printers. Designed as part of a complete network printing solution, HP LaserJet 4050 Series printers make it easier and more affordable than ever to print what you want, how you want it, when you want it.