One 16MB 100pin dram memory DIMM Part#: KTH-LJ2100/16 100% Compatible with Lifetime Warranty Manufactured by Keystron, LLC Keystron is a registered trademark of Keystron, LLC
Compatible with HP laserJet 2100, 2100M, 2100TN, 2100Se, 2100Xi but not on LaserJet 1100 series.