2GB DDR2-667 (PC2-5300) RAM Memory Upgrade for the Fujitsu LIFEBOOK Tablet PC T4220 (A1A2J34615A30001) (Genuine A-Tech Brand) 2GB DDR2-667 (PC2-5300) RAM Memory Upgrade for the Fujitsu LIFEBOOK Tablet PC T4220 (A1A2J34615A30001) 100% Genuine A-Tech Brand Memory 2GB DDR2-667 PC2-5300 Non-ECC Unbuffered 200 Pin 1.8V CL=5 Memory Limited Lifetime Warranty High Quality Ram specifically designed for the Fujitsu LIFEBOOK Tablet PC T4220 (A1A2J34615A30001)