Qimonda - 256MB PC2-5300U-555-12 1RX16 Memory New 377724-888 B4D72003 HYS64T32000HU-3S-B at Amazon.com
New Hynix DDR2 256MB 1Rx16 PC2-4200U-444-12 - HYMP532U64BP6-C4 AB (RAM) at Amazon.com
Beware of the single rank x16 RAM kits sneaked in some laptop models! The 1Rx16 modules have significantly lower bandwidth compared to the 1Rx8 variants - NotebookCheck.net News