Models that these upgrades will work for:

Toshiba Satellite 4000cds, cdt, 4005cds, cdt, Toshiba Satellite 4000CDT, Toshiba Satellite 4005CDS, Toshiba Satellite 4005CDT, Toshiba Satellite 4010cds, cdt, 4015cds, cdt, Toshiba Satellite 4010CDS-CDT, Toshiba Satellite 4015CDS-CDT, Toshiba Satellite 4020cds, cdt, 4025cds, cdt, Toshiba Satellite 4020CDT, Toshiba Satellite 4025CDT, Toshiba Satellite 4030CDS, Toshiba Satellite 4030CDT, Toshiba Satellite 4030cdt, 4060cdt, xcdt, Toshiba Satellite 4030CDT-NT, Toshiba Satellite 4060CDT, Toshiba Satellite 4060CDT-NT, Toshiba Satellite 4060XCDT, Toshiba Satellite 4070CDS, Toshiba Satellite 4070cds, cdt, 4080cdt, xcdt, Toshiba Satellite 4070CDT, Toshiba Satellite 4080XCDT, Toshiba Satellite 4080XCDT-NT, Toshiba Satellite 4090CDS, Toshiba Satellite 4090cds, cdt, xdvd, 4100xcdt, Toshiba Satellite 4090XDVD-NT, Toshiba Satellite 4090XDVD-XCDT, Toshiba Satellite 4100XCDT, Toshiba Satellite 4100XCDT NT, Toshiba Satellite 4100XDVD, Toshiba Satellite 4100XDVD-NT