HP P4515x Monochrome LaserJet Printer Upgrade your printer as business needs change Experience legendary reliability and consistent print quality Built-in Gigabit networking lets you share the printer across large workgroups with ease Improve performance and increase storage capacity with an optional EIO hard disk Get fast, secure performance across your network with advanced IPSec encryption Upgrade your printer as business needs change Experience legendary reliability and consistent print quality Built-in Gigabit networking lets you share the printer across large workgroups with ease Improve performance and increase storage capacity with an optional EIO hard disk Get fast, secure performance across your network with advanced IPSec encryption