Oddly...
http://ubuntuforums.org/archive/index.php/t-1910718.html
That post has the same part (and serial ??) number as yours but shows it running at 800MHz.So you may already have a DDR2-800 part in there but the motherboard tops out at 667 MHz.
http://www.amazon.com/PC2-5300-Modules-200-pin-Genuine--Tech/dp/B00C538B56/ref=sr_1_7?ie=UTF8&qid=1463357758&sr=8-7&keywords=DDr2+667+sodimm
This is 2x2GB DDR2-667 for $29. A-Tech is Amazon undercover. I've installed a couple of 32GB kits in older HP Proliant servers without issues.
That post has the same part (and serial ??) number as yours but shows it running at 800MHz.So you may already have a DDR2-800 part in there but the motherboard tops out at 667 MHz.
http://www.amazon.com/PC2-5300-Modules-200-pin-Genuine--Tech/dp/B00C538B56/ref=sr_1_7?ie=UTF8&qid=1463357758&sr=8-7&keywords=DDr2+667+sodimm
This is 2x2GB DDR2-667 for $29. A-Tech is Amazon undercover. I've installed a couple of 32GB kits in older HP Proliant servers without issues.
