A-TECH 2GB KIT (4 x 512MB) For Sony VAIO PCV PCV-RS604 PCV-RS610 PCV-RS612P PCV-RS620G PCV-RS630G PCV-RS700 PCV-RS710G PCV-RS720G PCV-RSM. DIMM DDR NON-ECC PC3200 400MHz RAM Memory. Genuine Brand. 2GB KIT (4 x 512MB) DIMM DDR NON-ECC PC3200 400MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For Sony VAIO PCV. (See Compatibility List Below)