Review HP ProBook 6550b Notebook - NotebookCheck.net Reviews
HP PROBOOK 6450B 14" Laptop 2.40 Ghz i5-M 450 8GB RAM (Grade B No Battery) - $46.75 | PicClick
HP ProBook 6550b Review: An HP business notebook that's packed with features, performs well and is comfortable to use - Brand Centre - All Purpose - PC World Australia
Ereplacements 9-cell Battery for HP ProBook 6450B 6545B 6550B (AT908AA-ER)