Arch Memory 2 GB (1 x 2 GB) 240-Pin DDR2 UDIMM for Acer Aspire X1200 Series RAM Arch Memory is a Registered Trademark of Arch Computer, LLC 2GB 240-Pin DDR2800Mhz SDRAM 2 GB Memory for Acer Aspire X1200 Series by Arch Memory Lifetime Replacement Warranty