128MB STICK For HP-Compaq Presario Notebook Series 1200-XL509 (12XL509) 1200-XL510 (12XL510) 1200-XL512 (12XL512) 1200-XL513 (12XL513) 1200-XL515 (12XL515) 1200-XL516 (12XL516) 1200-XL517 (12XL517) 1200-XL519 (12XL519) 1200-XL520 (12XL520) 1200-XL521 (12XL521) 1200-XL526 (12XL526) 1200-XL527 (12XL527) 1200-XL530 (12XL530) 1200-XL531 (12XL531) 1200ZA 1201EA 1202EA 1203EA 1205EA 1270 1270 1272 1272. SO-DIMM SD NON-ECC PC100 100MHz RAM Memory. Genuine A-Tech Brand. 128MB STICK SO-DIMM SD NON-ECC PC100 100MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For HP-Compaq Presario Notebook Series. (See Compatibility List Below)