A-Tech 2GB KIT 2 x 1GB HP-Compaq Pavilion dv5276eu (DDR) dv5277eu (DDR) dv5278eu (DDR) dv5279eu (DDR) dv6573cl dv6660ev Notebook dv6807eo (DDR1) SO-DIMM DDR NON-ECC PC2700 333MHz RAM Memory 2GB KIT (2 x 1GB) SO-DIMM DDR NON-ECC PC2700 333MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For HP-Compaq Pavilion Series. (See Compatibility List Below)