1GB Memory Upgrade Kit 

• Part Number: KTH-LJ4015/1024 (Kingston part# is for reference only)
• One 1GB 144-pin DDR2 SODIMM
• Compatible: Hewlett Packard Laserjet P4014n, LaserJet P4015n, LaserJet P4015tn, LaserJet P4015x, LaserJet P4515n, LaserJet P4515tn, LaserJet P4515x.