Information technology professionals rely on HP quality to ensure maximum productivity. As the power of applications, processors, memory adapters & storage devices increases, high-end computer users are seeking ways to optimize their system performance. HP provides leading solutions, adding new levels of performance, availability, flexibility, & management. Hardware compatibility HP Laser Jet Printer series: P2015 P2055 P3005 HP Color Laser Jet Printer series: CP1515n CP1518ni CP1525 CP2025 CP5225 M351a M451 HP Laser Jet Multifunction Printer series: M2727 CM2320 HP Color Laser Jet Multifunction Printer series: M375 M475 Whats in the box HP 256 MB DDR2 144-pin DIMM