OFFTEK 2GB Replacement Memory RAM Upgrade for HP-Compaq HP 6710b (DDR2-5300) Laptop Memory at Amazon.com
HP rolls out Compaq 6520s, 6720s, 6820s laptops | Engadget
Review HP Compaq 6720s Notebook - NotebookCheck.net Reviews
Review HP Compaq 6720s Notebook - NotebookCheck.net Reviews
2GB DDR2-667 (PC2-5300) RAM Memory Upgrade for The Compaq HP Business Notebook 6720s (Genuine A-Tech Brand) at Amazon.com
A-Tech 8GB (4 x 2GB) RAM for HP Compaq 6000 Pro - (Small Form Factor & Microtower) - DDR3 1066MHz PC3-8500 Non-ECC DIMM Memory Upgrade Kit at Amazon.com
Review HP Compaq 6720s Notebook - NotebookCheck.net Reviews