MDDR2-512 512MB DDR2 Memory for Kyocera Printer FS-1370DN FS-3540MFP FS-3640MFP FS-6525MFP FS-6530MFP ECOSYS P2135dn One 512MB 144pin DDR2 Sodimm Part#: MDDR2-512 100% Compatible with Lifetime Warranty Manufactured by Keystron, LLC Keystron is a registered trademark of Keystron, LLC