OK, here we go again:
The seller does not guarantee compatibility with the Mac. They provide no detailed description. Buy at your own risk. Check the return policy - who pays shipping, is there a restocking charge?
The module illustrated uses old-school TSOP chips, every modern design (Samsung, Infineon, Nanya, Siemens) uses MBGA chips which throw off less heat and consume less power.
If you are in the USA and want Powerbook guaranteed RAM, in stock, MBGA design, lifetime warranty, for $209 ($229 for Samsung original) go to Data Memory Systems
http://www.datamem.com/AMM12.asp
Thanks
Trevor
CanadaRAM.com