This replacement memory upgrade is ideal for upgrading the existing 512MB of system memory in older laptop models like HP-Compaq Presario Notebook CQ40-511TX.
OFFTEK 1GB Replacement Memory RAM Upgrade for Samsung X05 XTM 1600 (PC2700) Laptop Memory
OFFTEK 1GB Replacement Memory RAM Upgrade for Wortmann AG Terra Mobile Business 4205 (1200761) (DDR2-6400) Laptop Memory
OFFTEK 1GB Replacement Memory RAM Upgrade for Sony Vaio VGN-A140B4 (PC2700) Laptop Memory
OFFTEK 1GB Replacement Memory RAM Upgrade for Samsung X11-CV01 (DDR2-4200) Laptop Memory
OFFTEK 1GB Replacement Memory RAM Upgrade for Packard Bell Dot A/R-010UK (DDR3-10600) Laptop Memory
OFFTEK 1GB Replacement Memory RAM Upgrade for Packard Bell EasyNote R9 250D (DDR2-4200) Laptop Memory
