HP AY108AV is compatible in the following HP Models:

HP ZBook Studio Mobile Workstation series

HP ZBOOK STUDIO G3 MOBILE WORKSTATION - 2RE21PC

HP Z800 Workstation series

HP Z840 WORKSTATION - 1FR32UC

HP Z600 Workstation series

HP Z620 WORKSTATION - C3X55EC

HP Z400 Workstation series

HP Z420 WORKSTATION - D3P53EC
HP Z420 WORKSTATION - G2F32UC
HP Z440 WORKSTATION - N3D46EC
HP Z440 WORKSTATION - V6G61EC

HP ProBook 640 Notebook PC series

HP ProBook 640 G2 Notebook PC - Z0J54EC

HP Pro x2 600 series

HP PRO X2 612 G1 TABLET - X3B08PC

HP EliteDesk 800 G3 Small Form Factor PC (Apus)

HP ELITEDESK 800 G3 SMALL FORM FACTOR PC - 2MW23EC

HP EliteDesk 800 Desktop PC series

HP ELITEDESK 800 G1 SMALL FORM FACTOR PC - K3P31UC
HP ELITEDESK 800 G3 SMALL FORM FACTOR PC - 2MW23EC

HP EliteBook 850 Notebook PC series

HP ELITEBOOK 850 G3 NOTEBOOK PC - V6J79EC