HP Product
KF687AV
is compatible in the following HP Models:
HP Compaq 6700 Notebook PC series
HP COMPAQ 6735B NOTEBOOK PC - AY371US
HP COMPAQ 6735B NOTEBOOK PC - AZ640US
HP COMPAQ 6735B NOTEBOOK PC - NA970ET
HP COMPAQ 6735B NOTEBOOK PC (ENERGY STAR) - FM921UA