This product is ideal for upgrading existing memory in older laptops like the Compaq Presario Notebook X1390US to improve performance and extend laptop lifespan.
OFFTEK 512MB Replacement Memory RAM Upgrade for Sony Vaio VGN-TXN27N/T (DDR2-4200) Laptop Memory
OFFTEK 512MB Replacement Memory RAM Upgrade for Sony Vaio VGN-SZ27SP (DDR2-4200) Laptop Memory
OFFTEK 512MB Replacement Memory RAM Upgrade for Sony Vaio VGN-FS740/W (DDR2-4200) Laptop Memory
OFFTEK 512MB Replacement Memory RAM Upgrade for Sony Vaio PCG-K12 (PC2100) Laptop Memory
OFFTEK 512MB Replacement Memory RAM Upgrade for Sony Vaio VGN-A140B4 (PC2700) Laptop Memory
OFFTEK 512MB Replacement Memory RAM Upgrade for Sony Vaio PCG-GRX616 (PC2100) Laptop Memory
