ASUS X55A-DS91 15.6" Laptop Computer (Black) X55A-DS91 B&H Photo
OFFTEK 1GB Replacement Memory RAM Upgrade for Asus X55A (DDR3-10600) Laptop Memory at Amazon.com
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ASUS X55A (SX029V) - full specs, details and review
User manual Asus X55A-SX119H (English - 116 pages)