HP
803850-601
is compatible in the following HP Models:
HP ProBook 640 Notebook PC series
HP PROBOOK 640 G1 BASE MODEL NOTEBOOK PC - K9T91AV
HP PROBOOK 640 G1 NOTEBOOK PC - M5V27US
HP PROBOOK 640 G1 NOTEBOOK PC - T0L96US
HP PROBOOK 640 G1 NOTEBOOK PC (ENERGY STAR) - L9H52UT